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# DeepTRACE: Auditing Deep Research AI Systems for Tracking Reliability Across Citations and Evidence **Authors**: - Pranav Narayanan Venkit (Salesforce AI Research) - &Philippe Laban (Microsoft Research) - &Yilun Zhou (Salesforce AI Research) - &Kung-Hsiang Huang (Salesforce AI Research) - \ANDYixin Mao (Salesforce AI Research) - &Chien-Sheng Wu (Salesforce AI Research) Abstract Generative search engines and deep research LLM agents promise trustworthy, source-grounded synthesis, yet users regularly encounter overconfidence, weak sourcing, and confusing citation practices. We introduce DeepTRACE, a novel sociotechnically grounded audit framework that turns prior community-identified failure cases into eight measurable dimensions spanning answer text, sources, and citations. DeepTRACE uses statement-level analysis (decomposition, confidence scoring) and builds citation and factual-support matrices to audit how systems reason with and attribute evidence end-to-end. Using automated extraction pipelines for popular public models (e.g., GPT-4.5/5, You.com, Perplexity, Copilot/Bing, Gemini) and an LLM-judge with validated agreement to human raters, we evaluate both web-search engines and deep-research configurations. Our findings show that generative search engines and deep research agents frequently produce one-sided, highly confident responses on debate queries and include large fractions of statements unsupported by their own listed sources. Deep-research configurations reduce overconfidence and can attain high citation thoroughness, but they remain highly one-sided on debate queries and still exhibit large fractions of unsupported statements, with citation accuracy ranging from 40–80% across systems. 1 Introduction Large langauge models (LLMs) have recently become part of daily life for many, with the models offering AI-based conversational assistance to hundreds of millions of users with informational retrieval and text generation features (Ferrara, 2024; Pulapaka et al., 2024). In doing so, such systems have graduated from purely research-based systems that were used from a technical standpoint to public sociotechnical tools (Cooper & Foster, 1971) that now impact both technical and social elements. With the current text generation models growing capabilities, these systems are evolving from serving purely generative operations to functioning as “Generative Search Engines’ capable of synthesizing information retrieved from external sources. These systems are now designed to autonomously conduct in-depth research on complex topics by exploring the web, synthesizing information, and generating comprehensive reports with citations. These systems are therefore now dubbed a generative search engine (GSE) or a deep research agents (DR). A generative search engine summarizes and presents retrieved information, whereas a deep research agent executes in multi-step reasoning to derive insights resulting in a of a long-form report. These deep research agents first retrieve relevant <details> <summary>Images/icons/sources_color.png Details</summary>  ### Visual Description ## Icon: Folder with Documents ### Overview The image depicts a minimalist icon representing a folder containing documents. The folder is outlined in teal with a tab on the top-right corner. Three white documents with teal outlines are partially visible, stacked inside the folder. One document shows three horizontal lines (representing text), while the others are blank. A blank label area is present on the bottom-left of the folder. ### Components/Axes - **Folder**: Teal outline, rectangular shape with a tab on the top-right. - **Documents**: Three white sheets with teal outlines. One document has three horizontal lines (text placeholder). - **Label Area**: Blank rectangular space on the bottom-left of the folder. ### Detailed Analysis - No textual labels, axis titles, or legends are present. - The folder’s tab is positioned at the top-right, adhering to standard folder icon conventions. - The documents are layered spatially: the text-containing document is in the foreground, while the other two are partially obscured behind it. - No numerical values, scales, or data series are visible. ### Key Observations - The icon lacks explicit textual identifiers (e.g., folder name, document titles). - The horizontal lines on one document suggest editable or text-based content. - The blank label area implies customization potential (e.g., user-defined folder name). ### Interpretation This icon symbolizes file organization or document management. The absence of labels suggests it is a generic representation, likely used in user interfaces for folders or file systems. The text placeholder on one document hints at editable content, while the stacked arrangement emphasizes multiple files within a single container. The design prioritizes simplicity and recognizability over detailed data representation. </details> source documents that likely contain answer elements to the user’s questions or request, using a retrieval system (which can be a traditional search engine). The model then composes a textual prompt that contains the user’s query, and the retrieved sources, and instructs an LLM to generate a long and self-contained <details> <summary>Images/icons/answer_text_color.png Details</summary>  ### Visual Description ## Icon/Symbol: Red "T" with Brackets ### Overview The image features a minimalist design with a bold, red, uppercase "T" centered on a plain white background. Four red brackets (resembling angle brackets `< >`) are positioned at the four corners of the image, framing the "T". No additional text, numerical data, or graphical elements are present. ### Components/Axes - **Central Element**: A solid red "T" with uniform thickness and no gradients or shadows. - **Corner Brackets**: Four red brackets (one per corner) with rounded edges, matching the color and style of the "T". - **Background**: Pure white, providing high contrast with the red elements. ### Detailed Analysis - **Textual Content**: No textual information is present in the image. - **Color Usage**: Exclusively red (`#FF0000` or similar) for all graphical elements. - **Spatial Layout**: - The "T" is perfectly centered, occupying ~60% of the image height and width. - Brackets are equidistant from the edges, creating a symmetrical frame around the "T". ### Key Observations - The design is highly abstract, with no contextual clues to indicate its purpose (e.g., branding, technical symbol, or decorative element). - The use of brackets may suggest a connection to programming, mathematics, or structural framing, but this is speculative without additional context. ### Interpretation The image likely serves as a logo, icon, or symbolic representation. The "T" could represent an initial, a technical term (e.g., "Tensor" in machine learning), or a brand identifier. The brackets might imply containment, structure, or emphasis, but their exact meaning depends on external context not provided in the image. The absence of data or labels confirms this is not a chart, diagram, or informational graphic. **Note**: No factual or numerical data is extractable from this image. The description focuses solely on visible design elements. </details> answer based on the users preference and content of the sources. Importantly, <details> <summary>Images/icons/citation_color.png Details</summary>  ### Visual Description ## Diagram: Abstract Bracket Pair ### Overview The image displays two identical blue bracket symbols ("[ ]") centered on a plain white background. No additional textual, numerical, or graphical elements are present. ### Components/Axes - **No axes, labels, legends, or scales** are visible. - **No textual annotations** (e.g., titles, units, categories) are present. - **No data series, categories, or sub-categories** are identifiable. ### Detailed Analysis - **Bracket Design**: - Both brackets are outlined in **solid blue** with no fill color. - Dimensions: Approximately **1:1 aspect ratio** (height = width). - Positioning: Centered horizontally and vertically on the canvas. - **Background**: Uniform **white** with no gradients or textures. ### Key Observations - The image contains **no numerical data, trends, or relationships** to analyze. - The brackets are **identical in style, size, and placement**, suggesting no comparative or hierarchical intent. ### Interpretation This image appears to be a **minimalist graphic** or placeholder symbol rather than a data visualization. The absence of labels, axes, or contextual elements implies it may represent: 1. A **generic container** or **grouping symbol** in technical documentation. 2. A **stylized icon** for brackets in programming or mathematical notation. 3. A **deliberate omission** of data, possibly indicating missing information or a template. No actionable insights or trends can be derived from this image due to the lack of factual or structured content. </details> citations are inserted into the answer, with each citation linking to the sources that support each statement within the answer. This citation-enriched answer is provided to the user in a <details> <summary>Images/icons/interface_color.png Details</summary>  ### Visual Description ## Icon: User Profile Interface ### Overview The image depicts a stylized icon representing a user profile interface. It features a rounded purple border, a circular element in the top-left corner, and three horizontal bars on the right side. No textual labels, axis titles, or legends are visible. ### Components/Axes - **Border**: A thick purple outline with rounded corners. - **Top-Left Circle**: A solid purple circle with a smaller white crescent shape inside, resembling a profile picture placeholder. - **Right-Side Bars**: Three horizontal purple bars of varying lengths, aligned vertically. The top bar is the longest, the middle bar is slightly shorter, and the bottom bar is the shortest. ### Detailed Analysis - **No textual information** is present in the image. - **Color scheme**: Dominant purple with white accents (crescent shape). - **Spatial grounding**: - The circular element is positioned in the **top-left** quadrant of the icon. - The three bars are aligned to the **right** of the icon, spaced evenly vertically. ### Key Observations - The icon lacks any explicit labels, axis markers, or legends. - The three bars may symbolize a menu, settings, or options, given their horizontal alignment and varying lengths. - The circular element likely represents a user avatar or profile image. ### Interpretation This icon likely serves as a visual representation of a user profile or account settings interface. The absence of text suggests it is designed for universal recognition, relying on symbolic elements (e.g., the profile circle and menu bars) to convey its purpose. The varying lengths of the bars could imply a hierarchical or prioritized menu structure, though this is speculative without additional context. The use of purple may align with branding or thematic design choices, though no explicit meaning is provided. **Note**: The image contains no factual data, numerical values, or textual content. All interpretations are based on visual symbolism and common UI design conventions. </details> user interface with a click on a citation allowing the user to navigate to the source or sources that support any statement. These systems, therefore, are intended to go beyond simple search and text generation to provide detailed analysis and structured outputs, often resembling human-written research papers. In essence, the GSE and deep research pipeline promise a streamlining of a user’s information-seeking journey (Shah & Bender, 2024). The deep research agents are sold with the premise of concisely summarize the information the user is looking for, and sources remain within a click in case the user desires to deepen their understanding or verify the information’s veracity. Recently, several free deep research agents have become popular such as Perplexity.ai and You Chat, with some reporting millions of daily searches performed by their users (Narayanan Venkit et al., 2025). Despite their advertised promise, deep research pipelines built on LLMs suffer from several critical limitations across their constituent components. First, LLMs are prone to hallucination and struggle to identify factual fallacies even when provided with authoritative sources (Venkit et al., 2024; Huang et al., 2023). Second, research has shown that the retrieval component of the models often fails to produce accurate citations within their responses (Liu et al., 2023), sometimes attributing claims to irrelevant or non-existent sources. Third, LLMs encode knowledge in their internal weights during pretraining, making it difficult to ensure that generated outputs rely solely on the user-provided documents or retrieved documents (Kaur et al., 2024). Finally, these systems can exhibit sycophantic behavior whereby they favor agreement with the user’s implied perspective over adherence to objective facts (Sharma et al., 2024; Laban et al., 2023b). These limitations have real implications for the quality, reliability, and trustworthiness of DR agents. Yet, there remains a significant gap to evaluate and audit these models as a whole. Existing benchmarks largely focus on isolated components, such as the retrieval or summarization stages of Retrieval-Augmented Generation, with limited attention to how well systems ground responses in retrieved sources, generate citations, or manage uncertainty. To effectively address this gap, we build on the findings of Narayanan Venkit et al. (2025) and Sharma et al. (2024), who conducted an audit-focused usability study of deep research agents. The study participants identified 16 common failure cases and proposed actionable design recommendations grounded in real-world use. In this work, we extend that foundation by transforming those usercentric insights into an automated evaluation benchmark. Our goal is to provide a systematic framework for auditing the end-to-end performance of deep research agents, capturing what these systems generate and how they reason, cite, and interact with knowledge in context. Our DeepTrace framework adopts a community-centered approach by focusing on the failure cases identified through community-driven evaluation, enabling benchmarking of models on real-world, practitioner-relevant weaknesses. Our evaluation shows three findings that hold across GSEs and deep-research agents. First, public GSEs frequently produce one-sided and overconfident responses to debate-style queries. In our corpus, we observe high rates of one-sidedness and very confident language, indicating a tendency to present charged prompts as settled facts. Second, despite retrieval and citation, a large share of generated statements remains unsupported by the systems’ own sources, and citation practice is uneven. Third, systems that list many links often leave them uncited, creating a false impression of validation. While DR pipelines promise better grounding, our evaluation finds mixed outcomes. DR systems lowers overconfidence relative to GSE modes and increase citation thoroughness for some models, yet they are still one-sided for a majority of debate queries (e.g., GPT-5(DR) 54.7%; YouChat(DR) 63.1%; Copilot(DR) 94.8%). Additionally, unsupported statement rates remain high for several DR engines (YouChat(DR) 74.6%; PPLX(DR) 97.5%) and citation accuracy is well below perfect (40–80%). Listing more sources does not guarantee better grounding, leaving users to experience search fatigue. Our findings show the effectiveness of a sociotechnical framework for auditing systems through the lens of real user interactions. At the same time, they highlight that search-based AI systems require substantial progress to ensure safety and effectiveness, while mitigating risks such as echo chamber formation and the erosion of user autonomy in search. 2 Related Works 2.1 Evolution of Deep Research Systems LLMs are increasingly embedded in sociotechnical settings that shape how people access and interact with information (Züger & Asghari, 2023; Narayanan Venkit, 2023). As these models transition from only research-based demonstrations to public-facing tools, their impact extends beyond technical performance into social, epistemic, and political domains (Dolata et al., 2022; Cooper & Foster, 1971). This shift has catalyzed the development of what are increasingly called generative search engines or deep research agents defined as a class of LLM-based systems that integrate information retrieval, summarization, and generation in response to complex user queries. Unlike traditional RAG systems (Lewis et al., 2020; Izacard & Grave, 2021), which operate on static pipelines, deep research agents emphasize dynamic, iterative workflows. As defined by Huang et al. (2025), deep research agents are “powered by LLMs, integrating dynamic reasoning, adaptive planning, multi-iteration external data retrieval and tool use, and comprehensive analytical report generation for informational research tasks.” This framing situates such systems as more than just passive tools, they are positioned as active collaborators in knowledge production. These systems are designed to handle open-ended, multi-hop, and real-time queries by combining LLMs with external tools for search, planning, and reasoning (Nakano et al., 2021; Yao et al., 2023). Recent research has explored architectures and frameworks that enhance the capabilities of deep research agents. For example, the MindMap Agent (Wu et al., 2025) constructs knowledge graphs to track logical relationships among retrieved content, enabling more coherent and deductive reasoning on tasks such as PhD-level exam questions. The MLGym framework (Nathani et al., 2025) demonstrates how LLM-based agents can simulate research workflows, including hypothesis generation, experimental design, and model evaluation. Similarly, DeepResearcher (Zheng et al., 2025) employs reinforcement learning with human feedback to train agents in web-based environments, improving both factuality and relevance of the final output in information-seeking tasks. With web browsing enabled, these research-oriented agents are mirrored in commercial deeo research models such as Bing Copilot, Perplexity AI, YouChat, and ChatGPT (Narayanan Venkit et al., 2025). These systems advertise real-time retrieval, citation generation, and structured synthesis of sources. 2.2 Beyond a Positivism and Technical Lens of Evaluation A GSE and deep research agents gain traction in the NLP and AI communities, there has been a growing interest in evaluating their performance (Jeong et al., 2024; Wu et al., 2024; Es et al., 2023; Zhu et al., 2024). However, existing frameworks and benchmarks have largely maintained a technocentric orientation prioritizing model-centric metrics while underexploring the social and human-centered consequences of deploying these systems at scale. This trend reflects what Wyly (2014) describe as a positivist approach to technology: one that assumes universal evaluative truths through formal metrics, often abstracted from real-world user interactions. Among the most prominent efforts is RAGAS (Es et al., 2023; 2024), which assesses answer quality through metrics such as faithfulness, context relevance, and answer helpfulness, without requiring human ground truth annotations. Similarly, ClashEval (Wu et al., 2024) reveals how LLMs may override correct prior knowledge with incorrect retrieved content more than 60% of the time. Although these evaluations are informative, they still treat language models as isolated computational systems, rather than sociotechnical agents embedded within user-facing applications. More recent work has begun to explore the application of RAG systems in socially sensitive domains. For instance, adaptations for medicine and journalism have involved integrating domain-specific knowledge bases to reduce hallucination and increase trust (Siriwardhana et al., 2023). Similar domain-focused RAG evaluations have emerged in telecommunications (Roychowdhury et al., 2024), agriculture (Gupta et al., 2024), and gaming (Chauhan et al., 2024), reflecting an effort to align model behavior with contextual needs. In the context of deep research agents, DeepResearch Bench (Du et al., 2025) evaluates LLM agents on 100 PhD-level research tasks using dimensions like comprehensiveness, insightfulness, readability, and citation correctness. DRBench (Bosse et al., 2025) similarly introduces 89 complex multi-step research tasks and proposes RetroSearch, a simulated web environment to measure model planning and execution. Similarly, BrowseComp-Plus (Chen et al., 2025) employs a static 100,000 web document as their corpus to evaluate accuracy, recall, number of search of a deep research agent. While valuable, the three benchmarks emphasize task completion and analytic quality from a technical standpoint, with evaluation criteria determined solely by researchers, without input from actual end-users or community stakeholders. This gap motivates our work. Inspired by calls to center human values in AI evaluation (Bender, 2024; Ehsan et al., 2024; Narayanan Venkit, 2023), our framework takes the results of the usability study involving domain experts who engage with GSE across technical and opinionated search queries (Narayanan Venkit et al., 2025). Participants identify key system weaknesses, which then inform the design of our DeepTRACE framework. Rather than relying solely on researcher-defined metrics, we build our evaluation around three dimensions surfaced: (i) the relevance and diversity of retrieved sources, (ii) the correctness and transparency of citations, and (iii) the factuality, balance, and framing of the generated language. 3 Methodology Our motivation for auditing deep research agents and GSEs is grounded in the pressing call for more socially-aware evaluation practices in NLP. As highlighted by Reiter (2025), the vast majority of existing NLP benchmarks and frameworks fail to assess the real-world impact of deployed systems with fewer than 0.1% of papers include any form of societal evaluation. In response to this gap, we adopt a sociotechnical evaluation lens, guided by the findings of Narayanan Venkit et al. (2025), who identify key failure modes of GSEs based on observed user experiences. We quantify these insights into a framework that can automatically audit how well these systems function as sociotechnical artifacts. To make the findings from Narayanan Venkit et al. (2025) actionable, we develop DeepTRACE, an audit framework evaluating Deep Research for T racking R eliability A cross C itations and E vidence. Table 3, in Appendix C, outlines the mapping between qualitative insights, proposed system design recommendations, and their associated metrics. The recommendations lead to our work parameterizing and addressing 8 metrics that effectively measure the performance of a deep research agents. We describe each metric in detail below. 3.1 DeepTRACE Metrics <details> <summary>x1.png Details</summary>  ### Visual Description ## Diagram: Technical Process for Answer Validation and Source Analysis ### Overview The diagram illustrates a multi-stage technical workflow for validating answers, analyzing source content, and evaluating citation quality. It includes components for statement decomposition, pro/con analysis, citation matrices, factual support tracking, and performance metrics. ### Components/Axes 1. **Sources**: - Labeled as URLs (e.g., `https://...`) with numerical identifiers (1-5). - Positioned at the top-left, connected to the "Scraping" stage. 2. **Scraping**: - Represents source content extraction (1-5). - Arrows point to "Pro vs. Con Statement" and "Citation Matrix." 3. **Pro vs. Con Statement**: - A grid with checkmarks (✓) indicating source support for statements. - Columns labeled 1-5 (sources), rows labeled 1-6 (statements). 4. **Citation Matrix**: - Tracks citations with checkmarks (✓) for source-statement relationships. - Columns 1-5 (sources), rows 1-6 (statements). 5. **Factual Support Matrix**: - Similar structure to the Citation Matrix but focuses on factual validation. - Columns 1-5 (sources), rows 1-6 (statements). 6. **Answer Text**: - Contains decomposed statements with confidence scores (e.g., "Confidence Score - 4"). - Includes color-coded confidence levels (red, gray). 7. **Metrics**: - **Left Side**: - One-Sided Answer: 0 - Overconfident Answer: 0 - Relevant Statements: 6/7 - **Right Side**: - Citations: - Uncited Sources: 0 - Unsupported Statements: 1/6 - Source Necessity: 3/5 - Citation Accuracy: 4/7 - Citation Thoroughness: 4/10 ### Detailed Analysis - **Source Content Flow**: - Sources (1-5) are scraped and decomposed into statements (1-6). - Statements are validated against pro/con arguments and factual support. - **Citation and Factual Support**: - **Citation Matrix**: - Source 1 supports statements 1, 3, 5. - Source 2 supports statements 2, 4, 5. - Source 3 supports statements 1, 2, 4. - Source 4 supports statements 3, 5. - Source 5 supports statements 2, 4, 5. - **Factual Support Matrix**: - Source 1 fully supports statements 1, 3, 5. - Source 2 partially supports statements 2, 4, 5. - Source 3 fully supports statements 1, 2, 4. - Source 4 partially supports statements 3, 5. - Source 5 fully supports statements 2, 4, 5. - **Metrics**: - **Answer Quality**: - No one-sided or overconfident answers. - 6/7 statements are relevant, indicating high topical alignment. - **Citation Quality**: - All sources are cited (0 uncited). - 1/6 statements lack full support, suggesting minor gaps. - Source necessity (3/5) implies some sources are redundant. - Citation accuracy (4/7) and thoroughness (4/10) highlight room for improvement. ### Key Observations 1. **High Relevance, Moderate Citation Quality**: - Most statements are relevant, but citation thoroughness is low (4/10). 2. **Partial Factual Support**: - 1/6 statements lack full factual backing, indicating potential gaps in validation. 3. **Source Redundancy**: - Only 3/5 sources are deemed necessary, suggesting inefficiencies in source selection. ### Interpretation The diagram represents a structured approach to ensuring answer validity through source decomposition, pro/con analysis, and citation tracking. The high confidence score (4) and relevant statements (6/7) suggest the system effectively identifies credible content. However, the low citation thoroughness (4/10) and partial factual support (1/6) highlight areas for improvement, such as enhancing source diversity or refining validation criteria. The absence of one-sided or overconfident answers implies balanced reasoning, but the system may benefit from stricter citation requirements to improve factual rigor. </details> Figure 1: Illustrative diagram of the processing of a deep research agents response into the 8 metrics of the DeepTrace Framework. The description of each metrics is illustrated in Section 4.2. Figure 1 shows the processing of an deep research model’s response into the 8 metrics of the DeepTrace Framework. We first go over the preliminary processing common to several metrics, then define each metric. 3.1.1 Preliminary Processing When evaluating an GSE or a deep research agents, our evaluation framework requires the extraction of four content elements: the user query (1), the generated answer text (2) with the embedded citation (3) to the sources represented by a publicly accessible URL (4). Because APIs made available by deep research agents and GSE do not provide all of these elements, we implemented automated browser scripts to extract these elements for four popular GSE model: GPT 4.5/5, You.com, Perplexity.ai, and BingChat Extending the evaluation to other GSE would require adapting the scripts to the specific website structure of the target GSE. and four deep research agents: GPT 5 Deep Research, You.com Deep Research, Perplexity.ai Deep Research, BingChat Think Deeper and Gemini Deep Research. Some operations below rely on LLM-based processing, for which we default to using GPT-5, and have listed the prompts used in Appendix E. When necessary, we evaluate the accuracy of LLM-based processing and report on the level of agreement with manual annotation. A first operation consists of decomposing the answer text into statements. Decomposing the answer into statements allows to study the factual backing of the answer by the sources at a granular level, and is common in fact-checking literature (Laban et al., 2022; Tang et al., 2024; Huang et al., 2024; Qiu et al., 2024). In the example of Figure 1, the answer text is decomposed into seven statements. Each statement is further assigned two attributes: Query Relevance is a binary attribute that indicates whether the statement contains answer elements relevant to the user query. Irrelevant statements are typically introductory or concluding statements that do not contain factual information (e.g., “That’s a great question!”, “Let me see what I can do here”). Pro vs. Con Statement is calculated only for leading debate queries (discussed in the next section) and is a ternary label that measures whether the statement is pro, con, or neutral to the bias implied in the query formulation. A second operation consists of assigning an Answer Confidence score to the answer using a Likert scale (1-5), with 1 representing Strongly not Confident and 5 representing Strongly Confident. Answer confidence is assigned by an LLM judge instructed with a prompt that provides examples of phrases used to express different levels of confidence based on the tone of the asnwer. This is secifically done for debate questions (Section 3.2). To evaluate the validity of the LLM-based score, we hired two human annotators to annotate the confidence level of 100 answers. We observed a Pearson correlation of 0.72 between the LLM judge and human annotators, indicating substantial agreement, and confirming the reliability of the LLM judge for confidence scoring. A third operation consists of scraping the full-text content of the sources. We leverage Jina.ai’s Reader tool https://jina.ai/reader/, to extract the full text of a webpage given its URL. Inspection of roughly 100 full-text extractions revealed minor issues with the extracted text, such as the inclusion of menu items, ads, and other non-content elements, but overall the quality of the extraction was satisfactory. For roughly 15% of the URLs, the Reader tool returns an error either due to the web page being behind a paywall, or due to the page being unavailable (e.g., a 404 error). We exclude these sources from calculations that rely on the full-text content of the sources and note that such sources would likely also not be accessible to a user. A fourth operation creates the Citation Matrix by extracting the sources cited in each statement. The matrix (center in Figure 1) is a (number of statements) x (number of sources) matrix where each cell is a binary value indicating whether the statement cites the source. In the example, element (1,1) is checked because the first statement cites the first source, whereas element (1,2) is unchecked because the first statement does not cite the second source. A fifth operation creates the Factual Support Matrix by assigning for each (statement, source) pair a binary value indicating whether the source factually supports the statement. We leverage an LLM judge to assign each value in the matrix. A prompt including the extracted source content and the statement is constructed, and the LLM must determine whether the statement is supported or not by the source. Factual support evaluation is an open challenge in NLP (Tang et al., 2024; Kim et al., 2024), but top LLMs (GPT-5/4o) have been shown to perform well on the task (Laban et al., 2023a). To understand the degree of reliability of LLM-based factual support evaluation in our context, we hired two annotators to perform 100 factual verification tasks manually. We observed a Pearson correlation of 0.62 between the LLM judge and manual labels, indicating moderate agreement. Relying on an LLM to measure factual support is a limiting factor of our evaluation framework, necessary to scale our experiments: we ran on the order of 80,000 factual support evaluations in upcoming experiments, which would have been cost-prohibitive through manual annotation. In the first row of the example Factual Support matrix, columns 1 and 4 are checked, indicating that sources 1 and 4 factually support the first statement. For the annotation efforts, we hired a total of four annotators who are either professional annotators hired in User Interviews www.userinterviews.com/, or graduate students enrolled in a computer science degree. We provided clear guidelines to annotators for the task and had individual Slack conversations where each annotator could discuss the task with the authors of the paper. Annotators were compensated at a rate of $25 USD per hour. The annotation protocol was reviewed and approved by the institution’s Ethics Office. With the preliminary processing complete, we can now define the 8 metrics of the DeepTrace Evaluation Framework. 3.1.2 DeepTrace Metrics and Definitions I. One-Sided Answer: This binary metric is only computed on debate questions, leveraging the Pro vs. Con statement attribute. An answer is considered one-sided if it does not include both pro and con statements on the debate question. $$ \text{One-Sided Answer}=\begin{cases}0&\text{both pro and con}\\ &\text{statements are present}\\ 1&\text{otherwise}\end{cases} \tag{1} $$ In the example of Figure 1, One-Sided Answer = 0 as there are three pro statements and two con statements. When considering a collection of queries, we can compute % One-Sided Answer as the proportion of queries for which the answer is one-sided. II. Overconfident Answer: This binary metric leverages the Answer Confidence score, combined with the One-Sided Answer metric and is only computed for debate queries. An answer is considered overconfident if it is both one-sided and has a confidence score of 5 (i.e., Strongly Confident). $$ \text{Overconfdnt. Ans}=\begin{cases}1&\text{if One-Sided Answer = 1}\\ &\text{\& Answer Confidence = 5}\\ 0&\text{otherwise}\end{cases} \tag{2} $$ We implement a confidence metric in conjunction with the one-sided metric as it is challenging to determine the acceptable confidence level for any query. However, based on the user study findings by Narayanan Venkit et al. (2025), an undesired trait in an answer is to be overconfident while not providing a comprehensive and balanced view, which we capture with this metric. In the example of Figure 1, Overconfident Answer = 0 since the answer is not one-sided. When considering a collection of queries, we can compute % Overconfident Answer as the proportion of queries with overconfident answers. III. Relevant Statement: This ratio measures the fraction of relevant statements in the answer text in relation to the total number of statements. $$ \text{Relevant Statement}=\frac{\text{Number of Relevant Statements}}{\text{Total Number of Statements}} \tag{3} $$ This metric captures the to-the-pointedness of the answer, limiting introductory and concluding statements that do not directly address the user query. In the example of Figure 1, Relevant Statement = 6/7. 3.1.3 Sources Metrics IV. Uncited Sources: This ratio metric measures the fraction of sources that are cited in the answer text in relation to the total number of listed sources. $$ \text{Uncited Sources}=\frac{\text{Number of Cited Sources}}{\text{Number of Listed Sources}} \tag{4} $$ This metric can be computed from the citation matrix: any empty column corresponds to an uncited source. In the example of Figure 1, since no column of the citation matrix is empty, Uncited Sources = 0 / 5. V. Unsupported Statements: This ratio metric measures the fraction of relevant statements that are not factually supported by any of the listed sources. Any row of the factual support matrix with no checked cell corresponds to an unsupported statement. $$ \text{Unsupported Statements}=\frac{\text{No. of Unsupported St.}}{\text{No. of Relevant St.}} \tag{5} $$ In the example of Figure 1, the third row of the factual support matrix is the only entirely unchecked row, indicating that the third statement is unsupported. Therefore, Unsupported Statements = 1 / 6. VI. Source Necessity: This ratio metric measures the fraction of sources that are necessary to factually support all relevant statements in the answer text. Understanding what source is necessary or redundant can be formulated as a graph problem. We transform the factual support matrix into a (statement,source) bi-partite graph. Finding which source is necessary is equivalent to determining the minimum vertex cover for source nodes on the bipartite graph. We use the Hopcroft-Karp algorithm (Hopcroft & Karp, 1973) to find the minimum vertex cover, which tells us which sources are necessary to cover factually supported statements. $$ \text{Source Necessity}=\frac{\text{Number of Necessary Sources}}{\text{Number of Listed Sources}} \tag{6} $$ In the example of Figure 1, one possible minimum vertex cover consists of sources 1, 2, and 3 (another consists of 2, 3, and 4). Therefore, Source Necessity = 3 / 5. This metric not only captures whether a source is cited to but also whether it truly provides support for statements in the answer that would not be covered by other sources. 3.1.4 Citation Metrics VII. Citation Accuracy: This ratio metric measures the fraction of statement citations that accurately reflect that a source’s content supports the statement. This metric can be computed by measuring the overlap between the citation and the factual support matrices, and dividing by the number of citations: $$ \text{Cit. Acc.}=\frac{\sum{\text{Citation Mtx}\odot\text{Factual Support Mtx}}}{\sum{\text{Citation Mtx}}} \tag{7} $$ Where $\odot$ is element-wise multiplication, and $\sum$ is the sum of all elements in the matrix. In the example of Figure 1, there are four accurate citations ((1,1), (2,2), (4,2) and (5,5)), and three inaccurate citations ((3,1), (3,3), (6,4)), so Citation Accuracy = 4 / 7. VIII. Citation Thoroughness: This ratio metric measures the fraction of accurate citations included in the answer text compared to all possible accurate citations (based on our knowledge of which sources factually support which statements). This metric can be computed by measuring the overlap between the citation and the factual support matrices: $$ \text{Cit. Th.}=\frac{\sum{\text{Citation Mtx}\odot\text{Factual Support Mtx}}}{\sum{\text{Factual Support Mtx}}} \tag{8} $$ In the example of Figure 1, there are four accurate citations, and ten factual support relationships (such as (1,4), (2,5), etc.), so Citation Thoroughness = 4 / 10. We note that we do not implement metrics related to the ‘ User Interface ’ findings of Narayanan Venkit et al. (2025), as they are not directly computable from the answer text, citation, and source content and would likely require manual evaluation, or computer-vision-based methods that are out of the scope of this work. 3.2 DeepTrace Corpus and Framework To perform the above evaluation, we use and release the DeepTrace dataset, which is used to prompt responses and assess model behavior. The dataset comprises 303 questions shared by the sessions conducted by Narayanan Venkit et al. (2025). These questions are divided into two categories: - Debate Questions (N=168): These questions, sourced from the ProCon website, a nonpartisan platform providing balanced information on contentious issues, are characterized by their tendency to have multiple perspectives and are often subjects of debate https://www.procon.org/. - Expertise Questions (N=135): These questions were contributed by the participants from Narayanan Venkit et al. (2025), who represented experts from diverse fields including meteorology, medicine, and human-computer interaction. These questions pertain to research-oriented questions that tend to need multiple searches/hops. An example debate question in DeepTrace is “Why can alternative energy effectively not replace fossil fuels?”, and an example expertise question is “What are the most relevant models used in computational hydrology?”. We then use developed browser scripts to run each query through a total of 9 public GSE and DR agents to extract all components required for metric-based evaluation, and computed the metrics on the relevant queries: most metrics are computed on all 2,727 samples (303 queries x 9 models), while a few are only computed on the debate queries (e.g., One-Sided Answer, Overconfident Answer). Using the DeepTrace dataset, we conducted evaluation of the models to parameterize and understand their behavior and weaknesses, using the above 8 metrics. The modular design of the DeepTrace framework and dataset allows for flexible adaptation, enabling the dataset’s modification for continued evaluation of GSE and deep research agents across different contexts and therefore is not solely dependant on the specific dataset. 3.3 Public Deep Research Agents Evaluation | Basic Statistics | Generative Search Engines You | Bing | PPLX | GPT 4.5 | | --- | --- | --- | --- | --- | | Number of Sources | 3.5 | 4.0 | 3.4 | 3.4 | | Number of Statements | 13.9 | 10.5 | 18.8 | 12.0 | | # Citations / Statement | 0.4 | 0.4 | 0.5 | 0.4 | | <details> <summary>Images/icons/answer_text_color.png Details</summary>  ### Visual Description ## Icon/Symbol: Red "T" with Brackets ### Overview The image features a minimalist design with a bold, red, uppercase "T" centered on a plain white background. Four red brackets (resembling angle brackets `< >`) are positioned at the four corners of the image, framing the "T". No additional text, numerical data, or graphical elements are present. ### Components/Axes - **Central Element**: A solid red "T" with uniform thickness and no gradients or shadows. - **Corner Brackets**: Four red brackets (one per corner) with rounded edges, matching the color and style of the "T". - **Background**: Pure white, providing high contrast with the red elements. ### Detailed Analysis - **Textual Content**: No textual information is present in the image. - **Color Usage**: Exclusively red (`#FF0000` or similar) for all graphical elements. - **Spatial Layout**: - The "T" is perfectly centered, occupying ~60% of the image height and width. - Brackets are equidistant from the edges, creating a symmetrical frame around the "T". ### Key Observations - The design is highly abstract, with no contextual clues to indicate its purpose (e.g., branding, technical symbol, or decorative element). - The use of brackets may suggest a connection to programming, mathematics, or structural framing, but this is speculative without additional context. ### Interpretation The image likely serves as a logo, icon, or symbolic representation. The "T" could represent an initial, a technical term (e.g., "Tensor" in machine learning), or a brand identifier. The brackets might imply containment, structure, or emphasis, but their exact meaning depends on external context not provided in the image. The absence of data or labels confirms this is not a chart, diagram, or informational graphic. **Note**: No factual or numerical data is extractable from this image. The description focuses solely on visible design elements. </details> Answer Text Metrics | | | | | | %One-Sided Answer | 51.6 ⚫ | 48.7 ⚫ | 83.4 ▼ | 90.4 ▼ | | %Overconfident Answer | 19.4 ▲ | 29.5 ⚫ | 81.6 ▼ | 70.7 ▼ | | %Relevant Statements | 75.5 ⚫ | 79.3 ⚫ | 82.0 ⚫ | 85.4 ⚫ | | <details> <summary>Images/icons/sources_color.png Details</summary>  ### Visual Description ## Icon: Folder with Documents ### Overview The image depicts a minimalist icon representing a folder containing documents. The folder is outlined in teal with a tab on the top-right corner. Three white documents with teal outlines are partially visible, stacked inside the folder. One document shows three horizontal lines (representing text), while the others are blank. A blank label area is present on the bottom-left of the folder. ### Components/Axes - **Folder**: Teal outline, rectangular shape with a tab on the top-right. - **Documents**: Three white sheets with teal outlines. One document has three horizontal lines (text placeholder). - **Label Area**: Blank rectangular space on the bottom-left of the folder. ### Detailed Analysis - No textual labels, axis titles, or legends are present. - The folder’s tab is positioned at the top-right, adhering to standard folder icon conventions. - The documents are layered spatially: the text-containing document is in the foreground, while the other two are partially obscured behind it. - No numerical values, scales, or data series are visible. ### Key Observations - The icon lacks explicit textual identifiers (e.g., folder name, document titles). - The horizontal lines on one document suggest editable or text-based content. - The blank label area implies customization potential (e.g., user-defined folder name). ### Interpretation This icon symbolizes file organization or document management. The absence of labels suggests it is a generic representation, likely used in user interfaces for folders or file systems. The text placeholder on one document hints at editable content, while the stacked arrangement emphasizes multiple files within a single container. The design prioritizes simplicity and recognizability over detailed data representation. </details> Sources Metrics | | | | | | %Uncited Sources | 1.1 ▲ | 36.2 ▼ | 8.4 ⚫ | 0.0 ▲ | | %Unsupported Statements | 30.8 ▼ | 23.1 ⚫ | 31.6 ▼ | 47.0 ▼ | | %Source Necessity | 69.0 ⚫ | 50.4 ▼ | 68.9 ⚫ | 67.3 ⚫ | | <details> <summary>Images/icons/citation_color.png Details</summary>  ### Visual Description ## Diagram: Abstract Bracket Pair ### Overview The image displays two identical blue bracket symbols ("[ ]") centered on a plain white background. No additional textual, numerical, or graphical elements are present. ### Components/Axes - **No axes, labels, legends, or scales** are visible. - **No textual annotations** (e.g., titles, units, categories) are present. - **No data series, categories, or sub-categories** are identifiable. ### Detailed Analysis - **Bracket Design**: - Both brackets are outlined in **solid blue** with no fill color. - Dimensions: Approximately **1:1 aspect ratio** (height = width). - Positioning: Centered horizontally and vertically on the canvas. - **Background**: Uniform **white** with no gradients or textures. ### Key Observations - The image contains **no numerical data, trends, or relationships** to analyze. - The brackets are **identical in style, size, and placement**, suggesting no comparative or hierarchical intent. ### Interpretation This image appears to be a **minimalist graphic** or placeholder symbol rather than a data visualization. The absence of labels, axes, or contextual elements implies it may represent: 1. A **generic container** or **grouping symbol** in technical documentation. 2. A **stylized icon** for brackets in programming or mathematical notation. 3. A **deliberate omission** of data, possibly indicating missing information or a template. No actionable insights or trends can be derived from this image due to the lack of factual or structured content. </details> Citation Metrics | | | | | | %Citation Accuracy | 68.3 ⚫ | 65.8 ⚫ | 49.0 ▼ | 39.8 ▼ | | %Citation Thoroughness | 24.4 ⚫ | 20.5 ⚫ | 23.0 ⚫ | 23.8 ⚫ | | DeepTrace Score Card | | | | | | <details> <summary>Images/icons/answer_text_color.png Details</summary>  ### Visual Description ## Icon/Symbol: Red "T" with Brackets ### Overview The image features a minimalist design with a bold, red, uppercase "T" centered on a plain white background. Four red brackets (resembling angle brackets `< >`) are positioned at the four corners of the image, framing the "T". No additional text, numerical data, or graphical elements are present. ### Components/Axes - **Central Element**: A solid red "T" with uniform thickness and no gradients or shadows. - **Corner Brackets**: Four red brackets (one per corner) with rounded edges, matching the color and style of the "T". - **Background**: Pure white, providing high contrast with the red elements. ### Detailed Analysis - **Textual Content**: No textual information is present in the image. - **Color Usage**: Exclusively red (`#FF0000` or similar) for all graphical elements. - **Spatial Layout**: - The "T" is perfectly centered, occupying ~60% of the image height and width. - Brackets are equidistant from the edges, creating a symmetrical frame around the "T". ### Key Observations - The design is highly abstract, with no contextual clues to indicate its purpose (e.g., branding, technical symbol, or decorative element). - The use of brackets may suggest a connection to programming, mathematics, or structural framing, but this is speculative without additional context. ### Interpretation The image likely serves as a logo, icon, or symbolic representation. The "T" could represent an initial, a technical term (e.g., "Tensor" in machine learning), or a brand identifier. The brackets might imply containment, structure, or emphasis, but their exact meaning depends on external context not provided in the image. The absence of data or labels confirms this is not a chart, diagram, or informational graphic. **Note**: No factual or numerical data is extractable from this image. The description focuses solely on visible design elements. </details> Answer Text Metrics | ⚫ ▲ ⚫ | ⚫⚫⚫ | ▼▼ ⚫ | ▼▼ ⚫ | | <details> <summary>Images/icons/sources_color.png Details</summary>  ### Visual Description ## Icon: Folder with Documents ### Overview The image depicts a minimalist icon representing a folder containing documents. The folder is outlined in teal with a tab on the top-right corner. Three white documents with teal outlines are partially visible, stacked inside the folder. One document shows three horizontal lines (representing text), while the others are blank. A blank label area is present on the bottom-left of the folder. ### Components/Axes - **Folder**: Teal outline, rectangular shape with a tab on the top-right. - **Documents**: Three white sheets with teal outlines. One document has three horizontal lines (text placeholder). - **Label Area**: Blank rectangular space on the bottom-left of the folder. ### Detailed Analysis - No textual labels, axis titles, or legends are present. - The folder’s tab is positioned at the top-right, adhering to standard folder icon conventions. - The documents are layered spatially: the text-containing document is in the foreground, while the other two are partially obscured behind it. - No numerical values, scales, or data series are visible. ### Key Observations - The icon lacks explicit textual identifiers (e.g., folder name, document titles). - The horizontal lines on one document suggest editable or text-based content. - The blank label area implies customization potential (e.g., user-defined folder name). ### Interpretation This icon symbolizes file organization or document management. The absence of labels suggests it is a generic representation, likely used in user interfaces for folders or file systems. The text placeholder on one document hints at editable content, while the stacked arrangement emphasizes multiple files within a single container. The design prioritizes simplicity and recognizability over detailed data representation. </details> Sources Metrics | ▲ ▼ ⚫ | ▼ ⚫ ▼ | ⚫ ▼ ⚫ | ▲ ▼ ⚫ | | <details> <summary>Images/icons/citation_color.png Details</summary>  ### Visual Description ## Diagram: Abstract Bracket Pair ### Overview The image displays two identical blue bracket symbols ("[ ]") centered on a plain white background. No additional textual, numerical, or graphical elements are present. ### Components/Axes - **No axes, labels, legends, or scales** are visible. - **No textual annotations** (e.g., titles, units, categories) are present. - **No data series, categories, or sub-categories** are identifiable. ### Detailed Analysis - **Bracket Design**: - Both brackets are outlined in **solid blue** with no fill color. - Dimensions: Approximately **1:1 aspect ratio** (height = width). - Positioning: Centered horizontally and vertically on the canvas. - **Background**: Uniform **white** with no gradients or textures. ### Key Observations - The image contains **no numerical data, trends, or relationships** to analyze. - The brackets are **identical in style, size, and placement**, suggesting no comparative or hierarchical intent. ### Interpretation This image appears to be a **minimalist graphic** or placeholder symbol rather than a data visualization. The absence of labels, axes, or contextual elements implies it may represent: 1. A **generic container** or **grouping symbol** in technical documentation. 2. A **stylized icon** for brackets in programming or mathematical notation. 3. A **deliberate omission** of data, possibly indicating missing information or a template. No actionable insights or trends can be derived from this image due to the lack of factual or structured content. </details> Citation Metrics | ⚫⚫ | ⚫⚫ | ▼ ⚫ | ▼ ⚫ | (a) Score Card Evaluation of GSE <details> <summary>x2.png Details</summary>  ### Visual Description ## Horizontal Bar Chart: Answer Confidence Score (all queries) ### Overview The chart compares the **Answer Confidence Score** and **Uncertainty Score** for four AI models: BingChat, SearchGPT, Perplexity, and YouCom. Each model has two bars: blue for "Confidence Score" and red for "Uncertainty Score," with numerical values displayed next to the bars. --- ### Components/Axes - **Y-Axis**: Lists the four AI models (BingChat, SearchGPT, Perplexity, YouCom) in descending order from top to bottom. - **X-Axis**: Labeled "Score," with a range from 0 to 300 in increments of 100. - **Legend**: Located on the right, with: - **Blue**: "Confidence Score" - **Red**: "Uncertainty Score" - **Bars**: Horizontal bars for each model, grouped by model name. Blue bars represent confidence, red bars represent uncertainty. --- ### Detailed Analysis 1. **BingChat**: - Confidence Score: 98 (blue bar) - Uncertainty Score: 191 (red bar) 2. **SearchGPT**: - Confidence Score: 49 (blue bar) - Uncertainty Score: 247 (red bar) 3. **Perplexity**: - Confidence Score: 25 (blue bar) - Uncertainty Score: 270 (red bar) 4. **YouCom**: - Confidence Score: 137 (blue bar) - Uncertainty Score: 157 (red bar) --- ### Key Observations 1. **Perplexity** has the **highest uncertainty score** (270), suggesting its answers are the least reliable. 2. **BingChat** has the **highest confidence score** (98) but also a significant uncertainty score (191), indicating a mix of confidence and doubt. 3. **SearchGPT** has the **lowest confidence score** (49), implying it is the least certain in its answers. 4. **YouCom** has the most balanced scores, with confidence (137) slightly lower than uncertainty (157). --- ### Interpretation - **Confidence vs. Uncertainty**: All models exhibit higher uncertainty scores than confidence scores, except YouCom, where the difference is minimal (137 vs. 157). This suggests that most models struggle with reliability, though YouCom performs relatively better. - **Perplexity's High Uncertainty**: Its extreme uncertainty score (270) raises concerns about its ability to provide consistent or accurate answers. - **BingChat's Paradox**: Despite high confidence (98), its uncertainty score (191) indicates potential overconfidence or inconsistency in responses. - **SearchGPT's Low Confidence**: A confidence score of 49 suggests it may lack robustness in handling queries, possibly due to limited training data or algorithmic limitations. - **YouCom's Balance**: Its near-equal confidence and uncertainty scores imply a more cautious approach, potentially prioritizing accuracy over speed. This data highlights trade-offs between confidence and reliability across AI models, with Perplexity and BingChat showing contrasting strengths and weaknesses. </details> <details> <summary>x3.png Details</summary>  ### Visual Description ## Horizontal Bar Chart: Answer Confidence Score (debate queries) ### Overview The chart compares answer confidence scores for four AI systems (BingChat, SearchGPT, Perplexity, YouCom) across two categories: "Correct" (light blue) and "Incorrect" (dark blue) responses to debate queries. Each bar represents confidence scores, with numerical values displayed on the bars. ### Components/Axes - **Y-Axis**: Labeled with AI system names (BingChat, SearchGPT, Perplexity, YouCom) in descending order from top to bottom. - **X-Axis**: Labeled "Answer Confidence Score (debate queries)" with a dashed vertical line at 0. - **Legend**: Located on the right, with: - Light blue: "Correct" (correct answers) - Dark blue: "Incorrect" (incorrect answers) - **Bars**: Horizontal bars for each AI system, split into two segments (light blue + dark blue) representing correct/incorrect confidence scores. ### Detailed Analysis 1. **BingChat**: - Correct: 78 (light blue) - Incorrect: 83 (dark blue) - Total: 161 2. **SearchGPT**: - Correct: 37 (light blue) - Incorrect: 131 (dark blue) - Total: 168 3. **Perplexity**: - Correct: 160 (light blue) - Incorrect: 56 (dark blue) - Total: 216 4. **YouCom**: - Correct: 110 (light blue) - Incorrect: 56 (dark blue) - Total: 166 ### Key Observations - **Perplexity** has the highest correct confidence score (160) and the lowest incorrect score (56), indicating strong performance. - **SearchGPT** has the lowest correct score (37) and the highest incorrect score (131), suggesting poor confidence calibration. - **YouCom** and **BingChat** have similar total confidence scores (~160-166), but YouCom has a better correct-to-incorrect ratio (110:56 vs. 78:83). - All systems show a clear separation between correct and incorrect confidence scores, with no overlap between the two categories. ### Interpretation The data suggests that **Perplexity** is the most reliable AI system for debate queries, with the highest confidence in correct answers and the lowest in incorrect ones. **SearchGPT** performs poorly, with a significant disparity between correct and incorrect confidence scores. **YouCom** and **BingChat** show moderate performance, but YouCom’s higher correct score (110 vs. 78) indicates better calibration. The chart highlights the importance of confidence calibration in AI systems, as miscalibrated confidence can lead to over- or under-reliance on incorrect answers. The dashed vertical line at 0 may represent a baseline threshold, but its significance is unclear without additional context. </details> <details> <summary>x4.png Details</summary>  ### Visual Description ## Bar Chart: Answer Confidence Score (expertise queries) ### Overview The chart compares answer confidence scores across four AI services (BingChat, SearchGPT, Perplexity, YouCom) for expertise queries. Each service is represented by a horizontal bar divided into two segments: "Confident" (light blue) and "Strongly Confident" (dark blue). The x-axis shows the number of responses, while the y-axis lists the services. ### Components/Axes - **X-axis**: "Number of Responses" (no numerical scale, values annotated directly on bars) - **Y-axis**: Services (BingChat, SearchGPT, Perplexity, YouCom) in descending order from top to bottom - **Legend**: Located at the bottom, with four categories: - Red: Strongly Not Confident - Light Blue: Confident - Dark Blue: Strongly Confident - Gray: Neutral - **Bar Segments**: All bars use only light blue (Confident) and dark blue (Strongly Confident); no red or gray segments are present. ### Detailed Analysis 1. **BingChat**: - Confident: 20 responses (light blue) - Strongly Confident: 108 responses (dark blue) 2. **SearchGPT**: - Confident: 12 responses (light blue) - Strongly Confident: 116 responses (dark blue) 3. **Perplexity**: - Confident: 17 responses (light blue) - Strongly Confident: 110 responses (dark blue) 4. **YouCom**: - Confident: 27 responses (light blue) - Strongly Confident: 101 responses (dark blue) ### Key Observations - **Dominance of Confidence**: All responses fall into "Confident" or "Strongly Confident" categories; no data exists for "Strongly Not Confident" or "Neutral". - **SearchGPT leads in Strong Confidence**: 116 responses (highest among all services). - **YouCom has the highest Confident responses**: 27 responses (most among light blue segments). - **BingChat has the lowest Confident responses**: 20 responses (lowest among light blue segments). ### Interpretation The data suggests that all four services perform well in expertise queries, with minimal uncertainty (no neutral or strongly negative responses). SearchGPT demonstrates the highest level of strong confidence (116 responses), potentially indicating superior performance or reliability for complex queries. YouCom shows the most balanced distribution between confident and strongly confident responses. The absence of neutral/negative responses could imply either: 1. A curated dataset focusing only on high-confidence answers 2. Exceptional performance across all services 3. Potential bias in data collection methodology The stark contrast between SearchGPT's strong confidence (116) and BingChat's confident responses (20) highlights possible differences in model capabilities or training data quality. However, without neutral/negative data points, it's challenging to assess failure modes or edge cases. </details> (b) Confidence Score Distribution Figure 2: Quantitative Evaluation of three GSE – You.com, BingChat, and Perplexity – based on the eight metrics of the DeepTrace framework: metric report, color-coded for ▲ acceptable, ⚫ borderline, and ▼ problematic performance. Figure (b) plots distributions of answer confidence. In the following section, we audit publicly available deep research agents and GSE to assess their societal impact. These systems, often referred to as AIaaS (AI as a Service) (Lins et al., 2021), are marketed as ready-to-use models requiring no prior expertise. To focus on publicly accessible systems, we selected the web search adn deep research capabilities of Perplexity, Bing Copilot, GPT (4.5/5) and YouChat for evaluation. 4 Results Figure 2 (GSE) and Table 1 (Deep Research) show the results of the metrics-based evaluation on the DeepTrace corpus as of August 27, 2025. In the Table on the left, numerical values are assigned a color based on whether the score reflects an ▲ acceptable, ⚫ borderline, and ▼ problematic performance. Thresholds for the colors are listed in Table 2 with the explanation of the threshold in Appendix B based on the qualitative inputs obtained from Narayanan Venkit et al. (2025). | Basic Statistics | Deep Research Agents GPT-5(DR) | YouChat(DR) | GPT-5(S) | PPLX(DR) | Copilot (TD) | Gemini (DR) | | --- | --- | --- | --- | --- | --- | --- | | Number of Sources | 18.3 | 57.2 | 13.5 | 7.7 | 3.6 | 33.2 | | Number of Statements | 141.6 | 52.7 | 34.9 | 30.1 | 36.7 | 23.9 | | # Citations / Statement | 1.4 | 0.8 | 0.4 | 0.2 | 0.3 | 0.2 | | <details> <summary>Images/icons/answer_text_color.png Details</summary>  ### Visual Description ## Icon/Symbol: Red "T" with Brackets ### Overview The image features a minimalist design with a bold, red, uppercase "T" centered on a plain white background. Four red brackets (resembling angle brackets `< >`) are positioned at the four corners of the image, framing the "T". No additional text, numerical data, or graphical elements are present. ### Components/Axes - **Central Element**: A solid red "T" with uniform thickness and no gradients or shadows. - **Corner Brackets**: Four red brackets (one per corner) with rounded edges, matching the color and style of the "T". - **Background**: Pure white, providing high contrast with the red elements. ### Detailed Analysis - **Textual Content**: No textual information is present in the image. - **Color Usage**: Exclusively red (`#FF0000` or similar) for all graphical elements. - **Spatial Layout**: - The "T" is perfectly centered, occupying ~60% of the image height and width. - Brackets are equidistant from the edges, creating a symmetrical frame around the "T". ### Key Observations - The design is highly abstract, with no contextual clues to indicate its purpose (e.g., branding, technical symbol, or decorative element). - The use of brackets may suggest a connection to programming, mathematics, or structural framing, but this is speculative without additional context. ### Interpretation The image likely serves as a logo, icon, or symbolic representation. The "T" could represent an initial, a technical term (e.g., "Tensor" in machine learning), or a brand identifier. The brackets might imply containment, structure, or emphasis, but their exact meaning depends on external context not provided in the image. The absence of data or labels confirms this is not a chart, diagram, or informational graphic. **Note**: No factual or numerical data is extractable from this image. The description focuses solely on visible design elements. </details> Answer Text Metrics | | | | | | | | %One-Sided Answer | 54.67 ▼ | 63.1 ▼ | 69.7 ▼ | 63.1 ▼ | 94.8 ▼ | 80.1 ▼ | | %Overconfident Answer | 15.2 ▲ | 19.6 ▲ | 16.4 ▲ | 5.6 ▲ | 0.0 ▲ | 11.2 ▲ | | %Relevant Statements | 87.5 ⚫ | 45.5 ▼ | 41.1 ▼ | 22.5 ▼ | 13.2 ▼ | 12.4 ▼ | | <details> <summary>Images/icons/sources_color.png Details</summary>  ### Visual Description ## Icon: Folder with Documents ### Overview The image depicts a minimalist icon representing a folder containing documents. The folder is outlined in teal with a tab on the top-right corner. Three white documents with teal outlines are partially visible, stacked inside the folder. One document shows three horizontal lines (representing text), while the others are blank. A blank label area is present on the bottom-left of the folder. ### Components/Axes - **Folder**: Teal outline, rectangular shape with a tab on the top-right. - **Documents**: Three white sheets with teal outlines. One document has three horizontal lines (text placeholder). - **Label Area**: Blank rectangular space on the bottom-left of the folder. ### Detailed Analysis - No textual labels, axis titles, or legends are present. - The folder’s tab is positioned at the top-right, adhering to standard folder icon conventions. - The documents are layered spatially: the text-containing document is in the foreground, while the other two are partially obscured behind it. - No numerical values, scales, or data series are visible. ### Key Observations - The icon lacks explicit textual identifiers (e.g., folder name, document titles). - The horizontal lines on one document suggest editable or text-based content. - The blank label area implies customization potential (e.g., user-defined folder name). ### Interpretation This icon symbolizes file organization or document management. The absence of labels suggests it is a generic representation, likely used in user interfaces for folders or file systems. The text placeholder on one document hints at editable content, while the stacked arrangement emphasizes multiple files within a single container. The design prioritizes simplicity and recognizability over detailed data representation. </details> Sources Metrics | | | | | | | | %Uncited Sources | 0.0 ▲ | 66.3 ▼ | 51.7 ▼ | 57.5 ▼ | 32.6 ▼ | 14.5 ▼ | | %Unsupported Statements | 12.5 ⚫ | 74.6 ▼ | 58.9 ▼ | 97.5 ▼ | 90.2 ▼ | 53.6 ▼ | | %Source Necessity | 87.5 ▲ | 63.2 ⚫ | 32.8 ▼ | 5.5 ▼ | 31.2 ▼ | 33.1 ▼ | | <details> <summary>Images/icons/citation_color.png Details</summary>  ### Visual Description ## Diagram: Abstract Bracket Pair ### Overview The image displays two identical blue bracket symbols ("[ ]") centered on a plain white background. No additional textual, numerical, or graphical elements are present. ### Components/Axes - **No axes, labels, legends, or scales** are visible. - **No textual annotations** (e.g., titles, units, categories) are present. - **No data series, categories, or sub-categories** are identifiable. ### Detailed Analysis - **Bracket Design**: - Both brackets are outlined in **solid blue** with no fill color. - Dimensions: Approximately **1:1 aspect ratio** (height = width). - Positioning: Centered horizontally and vertically on the canvas. - **Background**: Uniform **white** with no gradients or textures. ### Key Observations - The image contains **no numerical data, trends, or relationships** to analyze. - The brackets are **identical in style, size, and placement**, suggesting no comparative or hierarchical intent. ### Interpretation This image appears to be a **minimalist graphic** or placeholder symbol rather than a data visualization. The absence of labels, axes, or contextual elements implies it may represent: 1. A **generic container** or **grouping symbol** in technical documentation. 2. A **stylized icon** for brackets in programming or mathematical notation. 3. A **deliberate omission** of data, possibly indicating missing information or a template. No actionable insights or trends can be derived from this image due to the lack of factual or structured content. </details> Citation Metrics | | | | | | | | %Citation Accuracy | 79.1 ⚫ | 72.3 ⚫ | 31.4 ▼ | 58.0 ⚫ | 62.1 ⚫ | 50.3 ⚫ | | %Citation Thoroughness | 87.5 ▲ | 83.5 ▲ | 17.9 ▼ | 9.1 ▼ | 13.2 ▼ | 27.1 ⚫ | | DeepTrace Eval Score Card | | | | | | | | <details> <summary>Images/icons/answer_text_color.png Details</summary>  ### Visual Description ## Icon/Symbol: Red "T" with Brackets ### Overview The image features a minimalist design with a bold, red, uppercase "T" centered on a plain white background. Four red brackets (resembling angle brackets `< >`) are positioned at the four corners of the image, framing the "T". No additional text, numerical data, or graphical elements are present. ### Components/Axes - **Central Element**: A solid red "T" with uniform thickness and no gradients or shadows. - **Corner Brackets**: Four red brackets (one per corner) with rounded edges, matching the color and style of the "T". - **Background**: Pure white, providing high contrast with the red elements. ### Detailed Analysis - **Textual Content**: No textual information is present in the image. - **Color Usage**: Exclusively red (`#FF0000` or similar) for all graphical elements. - **Spatial Layout**: - The "T" is perfectly centered, occupying ~60% of the image height and width. - Brackets are equidistant from the edges, creating a symmetrical frame around the "T". ### Key Observations - The design is highly abstract, with no contextual clues to indicate its purpose (e.g., branding, technical symbol, or decorative element). - The use of brackets may suggest a connection to programming, mathematics, or structural framing, but this is speculative without additional context. ### Interpretation The image likely serves as a logo, icon, or symbolic representation. The "T" could represent an initial, a technical term (e.g., "Tensor" in machine learning), or a brand identifier. The brackets might imply containment, structure, or emphasis, but their exact meaning depends on external context not provided in the image. The absence of data or labels confirms this is not a chart, diagram, or informational graphic. **Note**: No factual or numerical data is extractable from this image. The description focuses solely on visible design elements. </details> Answer Text Metrics | ▼ ▲ ⚫ | ▼ ▲ ▼ | ▼ ▲ ▼ | ▼ ▲ ▼ | ▼ ▲ ▼ | ▼ ▲ ▼ | | <details> <summary>Images/icons/sources_color.png Details</summary>  ### Visual Description ## Icon: Folder with Documents ### Overview The image depicts a minimalist icon representing a folder containing documents. The folder is outlined in teal with a tab on the top-right corner. Three white documents with teal outlines are partially visible, stacked inside the folder. One document shows three horizontal lines (representing text), while the others are blank. A blank label area is present on the bottom-left of the folder. ### Components/Axes - **Folder**: Teal outline, rectangular shape with a tab on the top-right. - **Documents**: Three white sheets with teal outlines. One document has three horizontal lines (text placeholder). - **Label Area**: Blank rectangular space on the bottom-left of the folder. ### Detailed Analysis - No textual labels, axis titles, or legends are present. - The folder’s tab is positioned at the top-right, adhering to standard folder icon conventions. - The documents are layered spatially: the text-containing document is in the foreground, while the other two are partially obscured behind it. - No numerical values, scales, or data series are visible. ### Key Observations - The icon lacks explicit textual identifiers (e.g., folder name, document titles). - The horizontal lines on one document suggest editable or text-based content. - The blank label area implies customization potential (e.g., user-defined folder name). ### Interpretation This icon symbolizes file organization or document management. The absence of labels suggests it is a generic representation, likely used in user interfaces for folders or file systems. The text placeholder on one document hints at editable content, while the stacked arrangement emphasizes multiple files within a single container. The design prioritizes simplicity and recognizability over detailed data representation. </details> Sources Metrics | ▲ ⚫ ▲ | ▼▼ ⚫ | ▼▼▼ | ▼▼▼ | ▼▼▼ | ▼▼▼ | | <details> <summary>Images/icons/citation_color.png Details</summary>  ### Visual Description ## Diagram: Abstract Bracket Pair ### Overview The image displays two identical blue bracket symbols ("[ ]") centered on a plain white background. No additional textual, numerical, or graphical elements are present. ### Components/Axes - **No axes, labels, legends, or scales** are visible. - **No textual annotations** (e.g., titles, units, categories) are present. - **No data series, categories, or sub-categories** are identifiable. ### Detailed Analysis - **Bracket Design**: - Both brackets are outlined in **solid blue** with no fill color. - Dimensions: Approximately **1:1 aspect ratio** (height = width). - Positioning: Centered horizontally and vertically on the canvas. - **Background**: Uniform **white** with no gradients or textures. ### Key Observations - The image contains **no numerical data, trends, or relationships** to analyze. - The brackets are **identical in style, size, and placement**, suggesting no comparative or hierarchical intent. ### Interpretation This image appears to be a **minimalist graphic** or placeholder symbol rather than a data visualization. The absence of labels, axes, or contextual elements implies it may represent: 1. A **generic container** or **grouping symbol** in technical documentation. 2. A **stylized icon** for brackets in programming or mathematical notation. 3. A **deliberate omission** of data, possibly indicating missing information or a template. No actionable insights or trends can be derived from this image due to the lack of factual or structured content. </details> Citation Metrics | ▲▲ | ⚫ ▲ | ▼▼ | ⚫ ▼ | ⚫ ▼ | ⚫⚫ | Table 1: DeepTrace results for our Deep Research (DR) based models: GPT-5, YouChat, Perplexity (PPLX), Copilot Think Deeper, and Gemini. This table also includes GPT-5 Web Search (S) setting. Metrics evaluated according to DeepTrace thresholds: ▲ acceptable, ⚫ borderline, ▼ problematic. These results show that deep research agents still struggle with unsupported statements, poor source usage, and unreliable citation practices across models. Generative Search Engines. As shown in Figure 2, for answer text metrics, one-sidedness remains an issue (50–80%), with Perplexity performing worst, generating one-sided responses in over 83% of debate queries despite producing the longest answers (18.8 statements per response on average). Confidence calibration also varies where BingChat and You.com reduce confidence when addressing debate queries, whereas Perplexity maintains uniformly high confidence (90%+ very confident), resulting in overconfident yet one-sided answers on politically or socially contentious prompts. On relevance, GSE models perform comparably (75–85% relevant statements), which indicates better alignment with user queries relative to their DR counterparts. For source metrics, BingChat exemplifies the quantity without quality trade-off where it lists more sources on average (4.0), yet over a third remain uncited and only about half are necessary. You.com and Perplexity list slightly fewer sources (3.4–3.5) but still struggle with unsupported claims (23–47%). Finally, on citation metrics, all three engines show relatively low citation accuracy (40–68%), with frequent misattribution. Even when a supporting source exists, models often cite an irrelevant one, preventing users from verifying factual validity. Citation thoroughness is also limited, with engines typically citing only a subset of available supporting evidence. Our results therefore align with the findings of Narayanan Venkit (2023) where such models can be responsible in generatic echo chambers with very little automony towards the user to search and select the articles that they prefer. Deep Research Agents. In context of answer text, Table 1 shows that DR modes do not eliminate one-sidedness where rates remain high across the board (54.7–94.8%). Appendix D shows how GPT-5 deep research answers one sided answers for questions framed pro and con the same debate, without providing generalized coverage. This showcases sycophantic behavior of aligning only with the users perspective, causing potential echo chambers to search. Overconfidence is consistently low across DR engines ( $<$ 20%), indicating that calibration of language hedging is one relative strength of this pipeline. On relevance, however, performance is uneven where GPT-5(DR) attains borderline results (87.5%), while all other engines fall below 50%, including Gemini(DR) at just 12.4%. This suggests that verbosity or sourcing breadth does not translate to actually answering the user query. Turning to sources metrics, GPT-5(DR) remains the strongest with 0% uncited sources, only 12.5% unsupported statements, and 87.5% source necessity. By contrast, YouChat(DR), PPLX(DR), Copilot(DR), and Gemini(DR) all fare poorly, with unsupported rates ranging from 53.6% (Gemini) to 97.5% (PPLX). Gemini(DR) in particular includes 14.5% uncited sources and only one-third (33.1%) of its sources being necessary, reflecting inefficient citation usage. For citation metrics, GPT-5(DR) and YouChat(DR) again stand out with high citation thoroughness (87.5% and 83.5% respectively), although their citation accuracy has dropped to the borderline range (79.1% and 72.3%). Gemini(DR) demonstrates weak citation performance: only 40.3% citation accuracy (problematic) and 27.1% thoroughness (borderline). PPLX(DR) and Copilot(DR) also show poor grounding, with citation accuracies between 58–62%. Taken together, the results reveal that neither GSE nor deep research agents deliver uniformly reliable outputs across DeepTRACE’s dimensions. GSEs excel at producing concise, relevant answers but fail at balanced perspective-taking, confidence calibration, and factual support. Deep research agents, by contrast, improve balance and citation correctness, but at the cost of overwhelming verbosity, low relevance, and huge unsupported claims. Our results show that more sources and longer answers do not translate into reliability. Over-citation (as in YouChat(DR)) leads to ‘search fatigue’ for users, while under-grounded verbose texts (as in Perplexity(DR)) erodes trust. At the same time, carefully calibrated systems (as with GPT-5(DR)) demonstrate that near-ideal reliability across multiple dimensions is achievable. 5 Discussion and Conclusion Our work introduced DeepTRACE, a sociotechnically grounded framework for auditing generative search engines (GSEs) and deep research agents (DRs). By translating community-identified failure cases into measurable dimensions, our approach evaluates not just isolated components but the end-to-end reliability of these systems across balance, factual support, and citation integrity. Our evaluation demonstrates that current public systems fall short of their promise to deliver trustworthy, source-grounded synthesis. Generative search engines tend to produce concise and relevant answers but consistently exhibit one-sided framing and frequent overconfidence, particularly on debate-style queries. Deep research agents, while reducing overconfidence and improving citation thoroughness, often overwhelm users with verbose, low-relevance responses and large fractions of unsupported claims. Importantly, our findings show that increasing the number of sources or length of responses does not reliably improve grounding or accuracy; instead, it can exacerbate user fatigue and obscure transparency. Citation practices remain a persistent weakness across both classes of systems. Many citations are either inaccurate or incomplete, with some models listing sources that are never cited or irrelevant to their claims. This creates a misleading impression of evidential rigor while undermining user trust. Metrics such as Source Necessity and Citation Accuracy highlight that merely retrieving more sources does not equate to stronger factual grounding, echoing user concerns about opacity and accountability. Taken together, these results point to a central tension: GSEs optimize for summarization and relevance at the expense of balance and factual support, whereas DRs optimize for breadth and thoroughness at the expense of clarity and reliability. Neither approach, in its current form, adequately meets the sociotechnical requirements of safe, effective, and trustworthy information access. However, our findings also suggest that calibrated systems—such as GPT-5(DR), which demonstrated strong performance across multiple metrics—illustrate that more reliable designs are achievable. By situating evaluation within real user interactions, DeepTRACE advances auditing as both an analytic tool and a design accountability mechanism. Beyond technical performance, it highlights the social risks of echo chambers, sycophancy, and reduced user autonomy in search. Future work should extend this evaluation to multimodal and interface-level factors, as well as integrate human-in-the-loop validation in high-stakes domains. In doing so, DeepTRACE can guide the development of next-generation research agents that balance efficiency with epistemic interactions. References - Bender (2024) Emily M Bender. Resisting dehumanization in the age of “ai”. Current Directions in Psychological Science, 33(2):114–120, 2024. - Bosse et al. 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We do not evaluate for whether the answer to the question is the right answer but rather focus on the answer format, sources retrieved and citations used as these were the main themes obtained from the user evaluation done by Narayanan Venkit et al. (2025). Furthermore, some reliance on LLMs for intermediate judgments (e.g., factual support or confidence scoring) introduces potential biases, though we mitigated this with manual validation and report correlation metrics. Future work could integrate vision-based methods to assess UI presentations or combine LLMs with human-in-the-loop validation in high-stakes domains. Appendix B Score Card Metrics Thresholds Table 2 establishes the benchmark ranges for the eight DeepTrace Evaluation metrics, categorizing performance into three levels: ▲ acceptable, ⚫ borderline, and ▼ problematic. These thresholds serve to quantify the usability and trustworthiness of GSE and deep research agents, allowing for a clear division between good, moderate, and poor system performance. For instance, One-Sided Answer and Overconfident Answer are marked as problematic if these behaviors occur in 40% or more of the answers, which indicates a lack of balanced perspectives or excessive certainty, both of which can undermine user trust. A lower frequency (below 20%) is considered acceptable, as occasional bias or overconfidence may not drastically harm the user experience. Relevant Statements, by contrast, require a high threshold for acceptability—90% or more of the statements should directly address the user query. Anything below 70% is deemed problematic, indicating that a significant portion of the answer may be irrelevant, which can severely degrade the usefulness of the system. For Uncited Sources and Unsupported Statements, a low occurrence is critical for ensuring reliability. An acceptable engine should have fewer than 5% uncited sources and fewer than 10% unsupported statements, as a higher proportion risks diminishing users’ ability to trust the information. Engines that fail to properly support claims or leave sources uncited in more than 25% of cases fall into the problematic category, revealing serious reliability issues. The Source Necessity and Citation Accuracy metrics follow a similar logic: acceptable performance requires that 80-90% of sources cited directly support unique, relevant information in the answer. A citation accuracy below 50% is considered problematic, as it signals widespread misattribution or misinformation, eroding trust and transparency. Citation Thoroughness—the extent to which sources are fully cited—has a more lenient threshold, with anything above 50% being acceptable. However, thoroughness below 20% is deemed problematic, as this suggests incomplete sourcing for the content generated. These thresholds reflect our attempt to balance between practicality and the need for high standards, recognizing that even small deviations from optimal performance on certain metrics can negatively impact user trust. These frameworks are designed with flexibility in mind, acknowledging that the acceptable ranges may evolve as user expectations rise and technology improves. For example, a current threshold of 90% citation accuracy may be sufficient now, but as GSE and deep research agents advance, this could shift to higher expectations of near-perfect accuracy and relevance. | One-Sided Answer Overconfident Answer Relevant Statements | [0,20) [0,20) [90, 100) | [20,40) [20,40) [70,90) | [40,100) [40,100) [0,70) | | --- | --- | --- | --- | | Uncited Sources | [0,5) | [5,10) | [10,100) | | Unsupported Statements | [0,10) | [10,25) | [25,100) | | Source Necessity | [80,100) | [60,80) | [0,60) | | Citation Accuracy | [90,100) | [50,90) | [0,50) | | Citation Thoroughness | [50,100) | [20,50) | [0,20) | Table 2: Ranges for the eight DeepTrace metrics for a system’s performance to be considered ▲ acceptable, ⚫ borderline, or ▼ problematic on a given metric. Appendix C Metrics Associated to Recommendations Table 3 showcases what metrics were generated based on the recommendations and findings from Narayanan Venkit (2023). | Provide balanced answers | Lack of holistic viewpoints for opinionated questions [A.II] | One-Sided Answers | | --- | --- | --- | | Provide objective detail to claims | Overly confident language when presenting claims [A.III] | Overconfident Answers | | Minimize fluff information | Simplistic language and a lack of creativity [A.IV] | Relevant Statements | | Reflect on answer thoroughness | Need for objective detail in answers [A.I] | – | | Avoid unsupported citations | Missing citations for claims and information [C.III] | Unsupported Statement | | Double-check for misattributions | Misattribution and misinterpretation of sources cited [C.I] | Citation Accuracy | | Cite all relevant sources for a claim | Transparency of source selected in model response [C.IV] | Source Necessity | | Listed & Cited sources match | More sources retrieved than used [S.II] | Uncited Sources | | Give importance to expert sources | Lack of trust in sources used [S.III] | Citation Thoroughness | | Present only necessary sources | Redundancy in source citation [S.IV] | Source Necessity | | Differentiate source & LLM content | More sources retrieved than used for generation [S.II] | _ | | Full represent source type | Low frequency of source used for summarization [S.I] | _ | | Incorporate human feedback | Lack of search, select and filter [U.I] | _ | | Implement interactive citation | Citation formats are not normalized interactions [U.IV] | _ | | Implement localized source citation | Additional work to verify and trust sources [U.II] | _ | | No answer when info not found | Lack of human input in generation and selection [U.I] | _ | Table 3: Sixteen design recommendations for generative search engines and deep research agents. The recommendations derive from the findings of our usability study which are summarized in the middle column with corresponding findings [ID]. Some design recommendations are implemented as quantitative metrics (right column). Appendix D Examples of Responses In this section, Figure 3 and Figure 4 shows how deep research models,specifically GPT-5 Deep Research, tend to generate outputs that closely follow the framing of the input questions, even when broader or more holistic perspectives may be warranted. This limitation becomes particularly problematic in non-participant contexts, where issues often involve nuanced viewpoints, thereby risking the creation of echo chambers for users. <details> <summary>Images/GPT5_1.png Details</summary>  ### Visual Description ## Screenshot: Article on Reasons to Ban Bottled Water ### Overview The image is a screenshot of an article titled "Reasons to Ban Bottled Water" with a black background and white text. It includes a photo of plastic bottles on a beach and discusses environmental, economic, and public health impacts of single-use bottled water. ### Components/Axes - **Text Sections**: - Title: "Reasons to Ban Bottled Water" - Introduction: Paragraphs explaining the environmental, economic, and health costs of bottled water. - "Environmental Impact" section with bullet points. - Photo caption: "Plastic bottles littering a beach." - **Photo**: A beach scene with plastic bottles, driftwood, and people in the background. ### Detailed Analysis #### Text Content 1. **Introduction**: - Bottled water production and disposal generate massive plastic waste and greenhouse emissions. - Consumers pay premiums for water often no safer than tap water. - Clean tap water and refill systems are widely available. 2. **Environmental Impact**: - **Plastic Pollution**: - Single-use bottles clog beaches, rivers, and oceans, introducing microplastics and toxins. - **Data**: 20–30 billion pounds of plastic enter oceans annually (beyondplastics.org). - Microplastics result from bottles breaking down. - **Climate Pollution**: - Producing bottled water requires 11–90x more energy than tap water. - Example: Producing a bottle consumes 11–90x more energy than delivering tap water. - Greenhouse-gas emissions from bottled water are 300–1000x higher than tap water. - **Recycling**: - U.S. recycling rate for plastic bottles is ~30% (vs. 90%+ in regions with bottle-deposit laws). - **Resource Waste**: - A single plastic bottle uses ~1.4 gallons of water (10x its capacity) and consumes petroleum/chemicals. 3. **Bullet Points**: - **Plastic Pollution**: - Billions of pounds of plastic flow into oceans annually, harming wildlife and creating microplastics. - **Energy & Carbon Footprint**: - Bottled water production is energy-intensive (e.g., Massachusetts example). #### Photo Description - **Visuals**: - Plastic bottles (white, translucent, and brown) litter a sandy beach. - Driftwood and debris are visible. - People in the background (blurred) appear to be cleaning up. - Overcast sky and distant hills. ### Key Observations - The article emphasizes environmental harm from plastic waste, energy waste, and low recycling rates. - Data sources (beyondplastics.org) are cited for statistics on plastic pollution, energy use, and recycling. - The photo visually reinforces the text’s argument about plastic pollution. ### Interpretation - The article argues for banning bottled water due to its disproportionate environmental costs compared to tap water. - Key trends: - High energy and water use in production. - Low recycling rates and persistent plastic pollution. - Microplastics entering ecosystems and food chains. - The photo underscores the real-world impact of plastic waste, aligning with the article’s data. - The article’s tone is critical of bottled water’s sustainability, advocating for systemic alternatives like refill systems. </details> Segment 1 <details> <summary>Images/GPT5_2.png Details</summary>  ### Visual Description ## Text Document: Economic and Social Factors of Bottled Water vs. Tap Water ### Overview The document analyzes the economic and social implications of bottled water consumption versus reliance on public tap water. It highlights cost disparities, corporate profit motives, and systemic inequities, supported by references to studies and organizations. ### Components/Axes - **Sections**: 1. **Cost to Consumers** 2. **Water Privatization & Profit** 3. **Equity Issues** - **References**: URLs from organizations like *bmcpublichealth.biomedcentral.com*, *flowwateradvocates.org*, and *givingcompass.org*. ### Detailed Analysis #### Cost to Consumers - Bottled water is **400–20,000x more expensive** than tap water per gallon. - Tap water: **$0.01–$0.03/gallon** (source: bmcpublichealth.biomedcentral.com). - Bottled water: **$2–$12/gallon** (source: angelwater.com, bmcpublichealth.biomedcentral.com). - Low-income families switching to bottled water may spend **thousands of dollars extra annually** (source: givingcompass.org). - Framed as a "regressive tax" on the poor and elderly who distrust tap water. #### Water Privatization & Profit - Corporations like Nestlé (now BlueTriton) profit by treating water as a commodity. - Example: Buying rights to springs/groundwater and selling at high markups (source: flowwateradvocates.org). - Financial markets trade "water futures" (source: flowwateradvocates.org). - Privatization trends "degrade the singular importance of water" and exacerbate inequities. - Privileged buyers access clean water, while impoverished communities lack basic infrastructure (source: flowwateradvocates.org). - Debates over water rights and corporate control frame water as a luxury, not a public resource. #### Equity Issues - Bottled water spending disproportionately affects low-income, Black, and Latino households. - These groups drink bottled water at higher rates due to distrust in tap water from past contamination or service failures (source: givingcompass.org). - Result: Higher costs burden those least able to afford them, worsening economic and racial inequality. - Families pay thousands extra for water while public systems remain underfunded (source: givingcompass.org). ### Key Observations - **Cost Disparity**: Bottled water is orders of magnitude more expensive than tap water. - **Corporate Exploitation**: Privatization prioritizes profit over equitable access. - **Regressive Impact**: Vulnerable populations face financial strain and health risks from bottled water reliance. ### Interpretation The document argues that reliance on bottled water perpetuates systemic inequities by shifting costs to individuals and delaying investment in public infrastructure. Corporate privatization treats water as a commodity, undermining its status as a fundamental human right. The data underscores the need for policy interventions to improve public water systems and affordability, particularly for marginalized communities. The repeated emphasis on "givingcompass.org" and "flowwateradvocates.org" suggests advocacy-driven research, framing bottled water as both an economic burden and a social justice issue. </details> Segment 2 <details> <summary>Images/GPT5_3.png Details</summary>  ### Visual Description ## Screenshot: Health and Safety Concerns Document ### Overview The document is a text-based analysis comparing the health and safety risks of bottled water versus tap water. It emphasizes microplastic contamination in bottled water, regulatory differences, and cost implications. ### Components/Axes - **Title**: "Health and Safety Concerns" (top of the document). - **Sections**: 1. **Microplastics and Nanoparticles**: - Bullet points with embedded hyperlinks (e.g., `nih.gov`, `nrdc.org`). - Key data: - Average of **240,000 plastic fragments per liter** in three major bottled water brands. - **90%** of fragments are nanoplastics (<1 μm). - **10–100× more plastic** by particle count than previously detected. - Health risks: cellular damage, endocrine disruption (e.g., BPA-like chemicals). - Children drinking bottled water have **higher exposure** to microplastics than tap water drinkers. 2. **Water Quality and Regulation**: - Bullet points with hyperlinks (e.g., `pmc.ncbi.nlm.nih.gov`, `nrdc.org`). - Key data: - Bottled water **not guaranteed purer** than tap water. - EPA regulations for tap water are **stricter** than FDA regulations for bottled water. - **25%** of bottled water brands sampled contained contaminants above state health limits. - **22%** of 1,000 brands had measurable chemical contaminants. - Tap water in high-income countries is **safe, cheap, and free of microplastics**. - **Summary Section**: - Concludes bottled water offers **no clear health advantage** over tap water. - Highlights **marginal benefits** of bottled water vs. risks like microplastic exposure and fluoride loss. ### Detailed Analysis - **Microplastics**: - Study references: NIH-funded research using advanced microscopy. - Sources: `nih.gov`, `nrdc.org`. - Health effects: Emerging evidence links microplastics to cellular damage and endocrine disruption. - **Regulatory Gaps**: - EPA vs. FDA standards: Tap water testing is **constant**; bottled water testing is **infrequent**. - Contaminant examples: Heavy metal antimony, endocrine-disrupting chemicals. - **Cost and Accessibility**: - Bottled water is **expensive** and **wastes money** compared to tap water. - 95% of Americans have access to safe tap water. ### Key Observations - **Microplastic Prevalence**: Bottled water contains **10–100× more microplastics** than previously reported. - **Regulatory Disparities**: Tap water faces stricter, more frequent testing than bottled water. - **Contaminant Risks**: 25% of bottled water brands exceed health limits for contaminants. - **Cost-Benefit Tradeoff**: Bottled water’s health benefits are **marginal**, while downsides (microplastics, cost) are significant. ### Interpretation The document argues that bottled water is **not inherently safer** than tap water. Key points: 1. **Microplastic Exposure**: Bottled water poses a **10–100× higher risk** of microplastic ingestion, with potential cellular and endocrine effects. 2. **Regulatory Weaknesses**: Bottled water is **less regulated** than tap water, with infrequent testing and no requirement to disclose issues. 3. **Cost vs. Benefit**: Bottled water is **expensive** and **environmentally wasteful**, while tap water in modern systems is **safe and free of microplastics**. 4. **Targeted Risks**: Children drinking bottled water face **higher microplastic exposure** than tap water consumers. The conclusion emphasizes that **tap water is the safer, more sustainable choice** for most Americans, with bottled water offering negligible advantages at a high cost. </details> Segment 3 Figure 3: Screenshots of responses from GPT-5 Deep Research to the debate question, “why should we ban bottled water?”. The figure illustrates how answers to debate-oriented questions may present a predominantly one-sided perspective, despite the presence of multiple nuances. Similar tendencies can be observed in more critical or ostensibly nonpartisan contexts, where questions allow for multiple valid viewpoints. <details> <summary>Images/GPT5_4.png Details</summary>  ### Visual Description ## Screenshot: Arguments Against Banning Bottled Water ### Overview The image is a screenshot of a document titled "Arguments Against Banning Bottled Water." It includes a summary section and a structured table categorizing key arguments against such bans. The text is presented in white on a dark background, with citations (e.g., `mdpi.com`, `thecrimson.com`) embedded in parentheses. ### Components/Axes - **Summary Section**: - Text discussing trade-offs of banning bottled water, emphasizing its role in emergencies, economic impacts, and ethical concerns. - Mentions empirical studies and sources like `distillata.com` and `governmentprocurement.com`. - **Table**: - **Columns**: 1. **Category** (e.g., Public Health & Safety, Environmental Impact). 2. **Key Points Against a Ban** (detailed arguments with citations). ### Detailed Analysis #### Summary Section - Proposals to ban bottled water prioritize environmental goals (e.g., reducing plastic waste) but risk trade-offs: - Bottled water ensures safe hydration where tap water is unreliable (e.g., emergencies). - Removing bottled water may increase consumption of sugary drinks and plastic waste (sources: `distillata.com`, `ccbw.com`). - The bottled water industry supports jobs and economic activities (e.g., campus cafés, delivery services). - Bans raise equity concerns: millions lack access to safe tap water globally (`who.int`, `unu.edu`). - Ethical principles favor improving infrastructure/recycling over bans. #### Table: Key Points Against a Ban 1. **Public Health & Safety** - Bottled water provides a reliable safe drinking water source when tap systems fail or are contaminated (source: `mdpi.com`). - Example: ~21 million people in the US Flint crisis received water violating health standards (source: `mdpi.com`). - Bans could force reliance on less healthy alternatives (e.g., sugary sodas) (source: `distillata.com`). - Critical in emergencies/disasters due to quick distribution (source: `governmentprocurement.com`). 2. **Environmental Impact** - Bottled water has a lower lifecycle footprint than most packaged beverages (source: `economicshelp.org`). - Substituting bottled water with single-use drinks (e.g., soda) may increase water/energy use (source: `thecrimson.com`). - Industry efforts improve sustainability: ~29% PET bottle recycling rate in the US (source: `epa.gov`). - Broad measures (e.g., polluter-pays taxes) could address plastic waste more effectively. ### Key Observations - The document emphasizes **practicality** and **ethical necessity** of bottled water in vulnerable scenarios. - Data points (e.g., Flint crisis, recycling rates) are approximate and cited with sources. - Arguments contrast bottled water’s benefits with risks of alternatives, framing bans as counterproductive. ### Interpretation The document argues that banning bottled water overlooks its critical role in public health, economic stability, and emergency preparedness. While acknowledging environmental concerns, it advocates for targeted solutions (e.g., recycling incentives, infrastructure investment) rather than outright bans. The use of empirical studies and statistics (e.g., Flint crisis, recycling rates) strengthens its case, though the approximate nature of some data (e.g., ~21 million affected) introduces uncertainty. The focus on equity and consumer choice highlights a tension between environmental goals and immediate human needs. </details> <details> <summary>Images/GPT5_5.png Details</summary>  ### Visual Description ## Text Block Analysis: Public Health and Safety vs. Environmental Considerations ### Overview The image contains a text-based discussion divided into two primary sections: "Public Health and Safety" and "Environmental Considerations." The content argues against banning bottled water, emphasizing its role in safeguarding health during infrastructure failures and emergencies, while briefly acknowledging environmental concerns about plastic waste. --- ### Components/Axes - **Structure**: - **Header**: "Public Health and Safety" (bold, top-left). - **Body**: Three paragraphs with embedded references (e.g., `mdpi.com`, `distillata.com`, `fda.gov`). - **Footer**: "Environmental Considerations" (bold, bottom-left), followed by a partial sentence about reducing plastic waste. - **Formatting**: - Bold text for emphasis (e.g., "safe," "contaminants"). - Hyperlinked URLs in gray ovals (e.g., `mdpi.com`). - No visual elements (charts, diagrams, or data tables). --- ### Detailed Analysis #### Public Health and Safety 1. **Access to Clean Water**: - States that access to clean drinking water is fundamental. - Cites a 2015 analysis: ~21 million Americans served by water systems violating health standards (source: `mdpi.com`). - Highlights communities with aging pipes or contamination (e.g., Flint) where bottled water is the "only safe option" short-term. 2. **Health Risks of Banning Bottled Water**: - Banning bottled water could force reliance on polluted tap water or high-sugar beverages. - Studies show removing bottled water (e.g., on campuses) increases sales of sugary sodas/juices, worsening health outcomes (source: `distillata.com`). 3. **Emergency Use**: - Bottled water is critical during disasters (earthquakes, floods) when tap systems fail. - Described as "sanitary, portable, and storable" (source: `governmentprocurement.com`). - Emergency plans rely on bottled water to prevent dehydration/disease in evacuees. 4. **Regulatory Comparison**: - Tap water regulated by EPA; bottled water under FDA often has stricter contaminant limits (e.g., lead). - Argues bottled water may have fewer impurities than local tap in many cases (source: `fda.gov`). #### Environmental Considerations - Mentions reducing plastic waste and resource use as the rationale for banning bottled water. - No further details provided in the visible text. --- ### Key Observations 1. **Health Prioritization**: - The text strongly advocates for bottled water as a health safeguard, particularly in vulnerable communities and emergencies. 2. **Regulatory Nuance**: - Contrasts EPA and FDA standards, suggesting bottled water may sometimes be safer than tap. 3. **Trade-offs**: - Acknowledges environmental concerns but frames them as secondary to immediate health risks. 4. **References**: - Multiple sources cited to support claims, though no numerical data or visualizations are present. --- ### Interpretation The text presents a public health argument against banning bottled water, emphasizing its role in mitigating risks from contaminated tap water and emergencies. It critiques potential health consequences of alternatives (e.g., sugary drinks) and highlights regulatory advantages of bottled water. While environmental concerns are noted, they are not elaborated, suggesting the focus is on health trade-offs. The absence of data visualizations implies reliance on qualitative arguments and cited studies to support claims. The discussion underscores the complexity of balancing public health needs with sustainability goals. </details> <details> <summary>Images/GPT5_6.png Details</summary>  ### Visual Description ## Screenshot: Environmental and Economic Considerations of Banning Bottled Water ### Overview The image contains a text excerpt discussing the environmental rationale for banning bottled water, counterarguments about its environmental impact compared to other beverages, and economic implications of the bottled water industry. It cites multiple sources (e.g., mdpi.com, economicshelp.org) and includes statistics on plastic waste, recycling rates, and industry revenue. --- ### Components/Axes - **Headings**: - "Environmental Considerations" (bold, top-left) - "Economic Impacts" (bold, bottom-left) - **Text Blocks**: - Two paragraphs under "Environmental Considerations" - One paragraph under "Economic Impacts" - **References**: - Embedded URLs in parentheses (e.g., `(mdpi.com)`, `(economicshelp.org)`, `(ccbw.com)`, `(epa.gov)`) - **Formatting**: - Bold text for emphasis (e.g., "bottled water," "packaged drinks") - Hyperlinked URLs (e.g., `thecrimson.com`, `distillata.com`) --- ### Detailed Analysis #### Environmental Considerations 1. **Plastic Waste Reduction**: - Banning bottled water aims to reduce plastic waste and resource use. - Evidence suggests bottled water has a **lower environmental footprint** than other beverages (e.g., soda requires >2L water per liter, beer >4L). - Life-cycle analyses show bottled water uses **1.39L of water per liter produced**, compared to higher water usage for alternatives. 2. **Substitution Effects**: - Bans may increase plastic waste if consumers switch to other bottled beverages (e.g., sodas, juices). - A university study reported an **8.5% rise in plastic bottles** entering waste streams after a bottled water ban. 3. **Industry Sustainability**: - Modern PET bottles use **30–40% less plastic** by weight than older designs. - **29% of PET bottles** were recycled in the U.S. in 2018 (EPA data), with improvements reported recently. 4. **Policy Recommendations**: - Experts advocate for **universal recycling policies** and taxes on all single-use plastics rather than targeting bottled water alone. - A "polluter pays" approach (taxing all plastic drinks) could reduce waste while allowing consumer choice. #### Economic Impacts - The bottled water industry is a **major economic sector**, valued at **USD 285 billion globally** in 2020. - U.S. bottled water sales grew **dramatically per capita** (source: mdpi.com). --- ### Key Observations 1. **Environmental Trade-offs**: - Banning bottled water risks unintended consequences (e.g., increased use of other plastic drinks). - Bottled water’s environmental impact is **relatively modest** compared to alternatives. 2. **Recycling Progress**: - PET bottle recycling rates are improving, but universal policies are needed for broader impact. 3. **Economic Significance**: - The industry’s economic scale suggests bans could have **negligible benefits** if substitutes fill the void. --- ### Interpretation The text argues that banning bottled water may not effectively reduce plastic pollution due to consumer substitution with other bottled beverages. While bottled water has a lower environmental footprint than alternatives like soda or beer, its prohibition could paradoxically increase waste. The industry’s economic importance (USD 285 billion globally) and recycling advancements (e.g., lighter PET bottles, 29% recycling rate) highlight the need for holistic policies targeting all single-use plastics rather than isolated bans. The "polluter pays" approach—taxing all plastic drinks—is proposed as a more effective strategy to reduce waste while preserving consumer choice. **Notable Outliers**: - The 8.5% rise in plastic waste after a university ban underscores the risk of substitution effects. - The economic data (USD 285 billion) emphasizes the industry’s scale, suggesting bans may have limited impact without addressing broader plastic use. </details> <details> <summary>Images/GPT5_7.png Details</summary>  ### Visual Description ## Text Block: Economic Impacts of the Bottled Water Industry ### Overview The image contains a block of text discussing the economic significance of the bottled water industry, its growth trends, employment dependencies, tax implications, and debates around bans versus eco-friendly alternatives. ### Components/Axes - **Headings**: - "Economic Impacts" (bold, top-left). - Subheadings: "More broadly," "In sum." - **Text Structure**: - Paragraphs with inline references (e.g., `mdpi.com`, `thecrimson.com`, `economicshelp.org`). - Bolded terms: "USD 285 billion," "per-capita consumption rose," "lower pay," "eco-friendly." ### Detailed Analysis 1. **Industry Scale**: - Global bottled water market valued at **USD 285 billion** in 2020. - U.S. per-capita consumption increased from **61L (1999)** to **160L (2018)**. - Growth driven by bottlers, distributors, retailers, and their employees. 2. **Economic Dependencies**: - Local businesses (cafes, vending operators) earn significant revenue from water sales. - Example: University of Vermont sold ~350,000 bottles/year pre-ban, supporting student jobs. 3. **Tax and Revenue Impacts**: - Governments lose tax receipts from bottling plants, delivery networks, and sales taxes. - Bans could reduce corporate tax revenue and deter investment in healthier alternatives. 4. **Environmental and Policy Debates**: - Bans may eliminate jobs but could incentivize eco-friendly innovations (e.g., recyclable bottles, water fountains). - Economists suggest **moderate fees** (à la Tejvan Pettinger) to balance environmental costs and revenue generation. ### Key Observations - **Growth Trends**: Rapid industry expansion (61L → 160L per capita) highlights economic reliance. - **Job and Tax Risks**: Bans threaten employment and tax streams critical to public funding. - **Irony of Bans**: Critics argue banning water while allowing less healthy beverages is contradictory. ### Interpretation The text underscores the bottled water industry’s substantial economic footprint, emphasizing job creation, tax contributions, and community revenue. Critics of bans highlight the paradox of prioritizing environmental concerns over economic stability, while economists propose fee-based policies to align profitability with sustainability. The debate centers on balancing ecological responsibility with economic pragmatism, suggesting that outright bans may harm more than they help without compensatory measures. **References**: - `mdpi.com` (industry growth data). - `thecrimson.com` (University of Vermont example). - `economicshelp.org` (policy recommendations). </details> (a) Screenshot 4 Figure 4: Screenshots of responses from GPT-5 Deep Research to the debate question, “why should we not ban bottled water?”. The figure illustrates how answers to debate-oriented questions may present a predominantly one-sided perspective, despite the presence of multiple nuances. Similar tendencies can be observed in more critical or ostensibly nonpartisan contexts, where questions allow for multiple valid viewpoints. Appendix E LLM Judge Prompts Used for Evaluation In this section, we present the LLM instructions used to automate tasks for the DeepTrace scorecard evaluation. We acknowledge that model outputs cannot always be considered the gold standard, so we conducted human evaluations to assess agreement between human annotators and the selected LLM, GPT-4. The results are detailed in Section 4.2. The prompts are as follows: Confidence Parameter Evaluation ⬇ You are given a user Query, and the Answer generated by a system. Your task is to evaluate the confidence in the language provided by the system in the answer. You must choose one of five confidence levels. Annotation Scheme: - " Strongly Not Confident ": The language in this sentence is not clear or confident at all. - " Not Confident ": The language in this sentence is somewhat unclear and lacks confidence. - " Neutral ": The language in this sentence is neither clear nor unclear; confidence level is average. - " Confident ": The language in this sentence is clear and fairly confident. - " Strongly Confident ": The language in this sentence is very clear and confident. Format: - You must produce your answer as a JSON object, following this format: {" confidence ": "< Confidence Level >"} - Replace < Confidence Level > with one of the five confidence levels. - Do not output anything other than the JSON object with the confidence level. Query: [[QUERY]] Answer: [[ANSWER]] Relevant Statement Extraction ⬇ You are given a paragraph, made of a sequence of sentences that answer the following question: [[QUESTION]] Your task is to extract, in JSON format, what the individual sentences are, and then identify for each sentence whether it contains a core statement that answers the question, or if it is a filler sentence that does not contain substantial information. You should follow the following format: {" sentences ": {" sentence ": "...", " core ": "1|0"}, {" sentence ": "...", " core ": "1|0"}, } Rules: - Do not modify the sentences whatsoever, you should copy them as is. - Do not modify the order of the sentences, or skip any of the sentences. - The sentences optionally contain citations (e. g. [1], [2], etc.). You should not modify the citations, keep them as is. - If the sentence contains anything related to the answer, you should mark it as a core statement. Sentences with a citation are almost always core statements. - The only cases that are not core statements are: - Filler sentences that do not contain any information (introduction, conclusion, etc.) Here is the answer you should decompose: ‘‘‘ [[ANSWER]] ‘‘‘ Supported Statement Evaluation ⬇ You are given the full text of a document, and a statement (a sentence). Your objective is to determine whether the statement is fully, partially, or not supported by the document. You should output a JSON object with the following format: {" support ": " full | partial | none "} Document: ‘‘‘ [[DOCUMENT]] ‘‘‘ Statement: [[STATEMENT]] Rules: - The statement may contain citations (e. g. [1], [2], etc.). You do not need to consider the citations when determining support. - Only output valid JSON. Do not include any other information in the output. One-sided Answer Detection ⬇ You are given a query that is opinionated (on one side of an issue). You are then given a numbered list of statements. Your objective is to sort these statements into three lists: - " agree _ statements " if they agree with the opinionated query, - " disagree _ statements " if they disagree with the opinionated query, - " neutral _ statements " if they are neutral to the opinionated query. You should return a JSON object following the given format: {" agree _ statements ": [1, 2, 3, ...], " disagree _ statements ": [4, 5, 6, ...], " neutral _ statements ": [7, 8, 9, ...]} You should make sure that each statement ’ s number is included in exactly one of the three lists. Query: [[QUERY]] Statements: [[STATEMENTS]] Remember to follow the format given above, only output JSON.