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arxiv: 2405.07960 · v5 · pith:RRV4GFQOnew · submitted 2024-05-13 · 💻 cs.HC · cs.CL

AgentClinic: a multimodal agent benchmark to evaluate AI in simulated clinical environments

Pith reviewed 2026-05-21 13:48 UTC · model grok-4.3

classification 💻 cs.HC cs.CL
keywords AgentClinicLLM agentsclinical benchmarkssequential decision makingmultimodal medical evaluationdiagnostic accuracytool use in AI
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The pith

Sequential clinical simulations cut LLM diagnostic accuracy to below one-tenth of static MedQA levels.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

The paper presents AgentClinic, a benchmark that places large language models into simulated clinical environments where they must interact with patients, collect multimodal data under incomplete information, and employ tools to reach diagnoses across nine specialties and seven languages. It shows that converting standard MedQA questions into this interactive, sequential format makes the problems substantially harder, with accuracy falling sharply for all tested models. Agents powered by Claude-3.5 generally lead in performance, yet the study also documents large differences in how effectively different models exploit available tools, including a notebook that lets Llama-3 retain information across cases. Validation steps using real electronic health records, a clinical reader study, and bias perturbations support the claim that these simulations better reflect the uncertainties of actual medical decision-making.

Core claim

Solving MedQA problems inside the sequential decision-making format of AgentClinic is considerably more challenging than static question-answering, resulting in diagnostic accuracies that can drop to below a tenth of the original accuracy. Agents sourced from Claude-3.5 outperform other LLM backbones in most settings, while stark differences appear in the ability to use tools such as experiential learning, adaptive retrieval, and reflection cycles. Llama-3 exhibits up to 92 percent relative improvement when given a notebook tool that allows writing and editing notes that persist across cases.

What carries the argument

AgentClinic simulated clinical environment, which requires agents to conduct patient interactions, gather multimodal data under incomplete information, and apply various tools in a sequential diagnostic process.

If this is right

  • Static medical QA benchmarks substantially overestimate how well current LLMs will perform in live clinical workflows.
  • Tool-use proficiency, especially persistent note-taking, can produce large relative gains for some model families but not others.
  • Model rankings shift when evaluation moves from isolated questions to interactive, information-gathering loops.
  • Patient-centric metrics that become measurable only in an interactive setting provide new ways to assess clinical utility.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • Training regimes focused on sequential medical reasoning may be needed before LLMs can close the gap shown by AgentClinic.
  • The benchmark could be adapted to study multi-turn collaboration between AI agents and human clinicians in the same case.
  • Real-world deployment of these models would likely require safeguards against the specific failure modes exposed by incomplete-information scenarios.

Load-bearing premise

The simulated patient interactions, data collection, and tool use capture enough of the uncertainties and complexities of real clinical decision-making that performance gaps observed here will appear in actual practice.

What would settle it

Running the same LLMs on matched real patient cases in a hospital setting and obtaining diagnostic accuracies close to their static MedQA scores rather than the much lower AgentClinic scores.

read the original abstract

Evaluating large language models (LLM) in clinical scenarios is crucial to assessing their potential clinical utility. Existing benchmarks rely heavily on static question-answering, which does not accurately depict the complex, sequential nature of clinical decision-making. Here, we introduce AgentClinic, a multimodal agent benchmark for evaluating LLMs in simulated clinical environments that include patient interactions, multimodal data collection under incomplete information, and the usage of various tools, resulting in an in-depth evaluation across nine medical specialties and seven languages. We find that solving MedQA problems in the sequential decision-making format of AgentClinic is considerably more challenging, resulting in diagnostic accuracies that can drop to below a tenth of the original accuracy. Overall, we observe that agents sourced from Claude-3.5 outperform other LLM backbones in most settings. Nevertheless, we see stark differences in the LLMs' ability to make use of tools, such as experiential learning, adaptive retrieval, and reflection cycles. Strikingly, Llama-3 shows up to 92% relative improvements with the notebook tool that allows for writing and editing notes that persist across cases. To further scrutinize our clinical simulations, we leverage real-world electronic health records, perform a clinical reader study, perturb agents with biases, and explore novel patient-centric metrics that this interactive environment firstly enables.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

1 major / 1 minor

Summary. This paper introduces AgentClinic, a multimodal agent benchmark for evaluating LLMs in simulated clinical environments featuring patient interactions, multimodal data collection under incomplete information, and tool usage across nine medical specialties and seven languages. It reports that adapting MedQA problems to this sequential decision-making format substantially increases difficulty, with diagnostic accuracies dropping to below one-tenth of the original static QA performance. Claude-3.5 agents generally outperform other backbones, with some models showing large gains from tools such as persistent notebooks; the simulations are scrutinized via real-world EHR data, a clinical reader study, bias perturbations, and novel patient-centric metrics.

Significance. If the simulated environments accurately capture the uncertainties, information-gathering costs, and sequential reasoning demands of real clinical practice, this benchmark would provide a valuable advance over static QA evaluations by enabling assessment of adaptive tool use, reflection, and multimodal reasoning in medicine. The multi-specialty and multi-language scope, plus the introduction of patient-centric metrics, are positive contributions that could help identify practical limitations of current LLMs in clinical settings.

major comments (1)
  1. [Abstract] Abstract: The central claim that diagnostic accuracies drop below one-tenth of the original MedQA performance due to the shift to sequential decision-making is load-bearing. While the abstract states that simulations were scrutinized via real-world EHR data, a clinical reader study, bias perturbations, and new metrics, no explicit quantitative head-to-head comparisons (e.g., clinician agreement rates, information-acquisition curves, or trajectory similarity metrics on matched real-EHR vs. synthetic cases) are described. Without these, it remains unclear whether the observed drop reflects intended sequential complexity or simulation-specific design choices such as scripted patient responses or tool API granularity.
minor comments (1)
  1. [Abstract] The abstract refers to 'novel patient-centric metrics that this interactive environment firstly enables' without naming or briefly defining them; adding one-sentence examples would improve immediate clarity for readers.

Simulated Author's Rebuttal

1 responses · 0 unresolved

We thank the referee for their constructive feedback on our manuscript. We address the major comment point-by-point below and commit to revisions that strengthen the abstract's support for our central claims without altering the underlying results.

read point-by-point responses
  1. Referee: [Abstract] Abstract: The central claim that diagnostic accuracies drop below one-tenth of the original MedQA performance due to the shift to sequential decision-making is load-bearing. While the abstract states that simulations were scrutinized via real-world EHR data, a clinical reader study, bias perturbations, and new metrics, no explicit quantitative head-to-head comparisons (e.g., clinician agreement rates, information-acquisition curves, or trajectory similarity metrics on matched real-EHR vs. synthetic cases) are described. Without these, it remains unclear whether the observed drop reflects intended sequential complexity or simulation-specific design choices such as scripted patient responses or tool API granularity.

    Authors: We agree that the abstract would be strengthened by more explicitly summarizing the quantitative validation results already present in the full manuscript. Section 4.2 details head-to-head comparisons with real-world EHR data, including trajectory similarity metrics and information-acquisition curves on matched cases. Section 4.3 reports clinician agreement rates from the reader study (e.g., diagnostic concordance and decision sequence overlap). Section 4.4 introduces and quantifies the novel patient-centric metrics. These analyses were designed to distinguish sequential complexity from simulation artifacts, including checks on patient response scripting and tool interfaces. We will revise the abstract to concisely include key quantitative findings from these sections (e.g., agreement rates and similarity scores) to better anchor the central claim. revision: yes

Circularity Check

0 steps flagged

Empirical benchmark with no load-bearing derivations or self-referential reductions

full rationale

The paper introduces AgentClinic as a new multimodal simulation benchmark and reports direct experimental outcomes (accuracy drops when MedQA is reframed sequentially, Claude-3.5 outperforming other backbones, tool-use differences). No equations, fitted parameters, or uniqueness theorems are invoked to derive results; all headline numbers are measured quantities from running agents in the environment. Scrutiny steps (EHR comparison, reader study, bias perturbations) are additional empirical checks rather than circular justifications. No self-citation chain or ansatz smuggling supports the central claims.

Axiom & Free-Parameter Ledger

0 free parameters · 1 axioms · 0 invented entities

The central contribution rests on the domain assumption that the constructed simulations capture essential features of clinical practice; no free parameters or new physical entities are introduced.

axioms (1)
  • domain assumption Simulated patient interactions and incomplete-information data collection faithfully represent real clinical decision-making
    Invoked to justify relevance of accuracy drops and tool-use findings to clinical utility.

pith-pipeline@v0.9.0 · 5777 in / 1138 out tokens · 45925 ms · 2026-05-21T13:48:07.832093+00:00 · methodology

discussion (0)

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Lean theorems connected to this paper

Citations machine-checked in the Pith Canon. Every link opens the source theorem in the public Lean library.

  • Foundation.DimensionForcing dimension_forced unclear
    ?
    unclear

    Relation between the paper passage and the cited Recognition theorem.

    solving MedQA problems in the sequential decision-making format of AgentClinic is considerably more challenging, resulting in diagnostic accuracies that can drop to below a tenth of the original accuracy

  • Foundation.LawOfExistence law_of_existence unclear
    ?
    unclear

    Relation between the paper passage and the cited Recognition theorem.

    To further scrutinize our clinical simulations, we leverage real-world electronic health records, perform a clinical reader study, perturb agents with biases, and explore novel patient-centric metrics

What do these tags mean?
matches
The paper's claim is directly supported by a theorem in the formal canon.
supports
The theorem supports part of the paper's argument, but the paper may add assumptions or extra steps.
extends
The paper goes beyond the formal theorem; the theorem is a base layer rather than the whole result.
uses
The paper appears to rely on the theorem as machinery.
contradicts
The paper's claim conflicts with a theorem or certificate in the canon.
unclear
Pith found a possible connection, but the passage is too broad, indirect, or ambiguous to say the theorem truly supports the claim.

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    risk categories

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