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Accepted for/Published in: Journal of Medical Internet Research

Date Submitted: Nov 21, 2025
Open Peer Review Period: Nov 23, 2025 - Jan 18, 2026
Date Accepted: Feb 25, 2026
(closed for review but you can still tweet)

The final, peer-reviewed published version of this preprint can be found here:

Deep Research Agents: Major Breakthrough or Incremental Progress for Medical AI?

Wong MYH, Ong AY, Merle DA, Keane PA

Deep Research Agents: Major Breakthrough or Incremental Progress for Medical AI?

J Med Internet Res 2026;28:e88195

DOI: 10.2196/88195

PMID: 41886751

Warning: This is an author submission that is not peer-reviewed or edited. Preprints - unless they show as "accepted" - should not be relied on to guide clinical practice or health-related behavior and should not be reported in news media as established information.

Deep Research Agents: Major Breakthrough or Incremental Progress for Medical AI ?

  • Matthew Yu Heng Wong; 
  • Ariel Yuhan Ong; 
  • David A Merle; 
  • Pearse A Keane

ABSTRACT

Deep Research Agents are autonomous LLM-based systems capable of iterative web search, retrieval, and synthesis. They are increasingly positioned as the next major leap in medical AI. In this Viewpoint, we argue that while these agents mark progress in information access and workflow automation, they represent an incremental evolution rather than a paradigm shift. We review and summarise current applications of Deep Research Agents in medical scenarios, including literature review generation, clinical evidence synthesis, guideline comparison, and patient education. Across these early use cases, the tools demonstrate the ability to rapidly gather and structure up-to-date information, often producing outputs that appear comprehensive and well-referenced, offering tangible benefits to clinicians and researchers. Yet these strengths coexist with unresolved and clinically significant limitations. Citation fidelity remains inconsistent across models, with subtle misinterpretations or unreliable references still common. Their retrieval processes and evidence-ranking mechanisms remain opaque, raising concerns about reproducibility and hidden biases. Moreover, overreliance on AI-generated syntheses risks eroding clinicians’ critical appraisal skills and may introduce automation bias at a time when medicine increasingly requires deeper scrutiny of information sources. Safety constraints are also less predictable within multi-step research pipelines, increasing the risk of harmful or inappropriate outputs. We contend that Deep Research Agents should be embraced as powerful assistants rather than pseudo-experts. Their value lies in accelerating information gathering, not replacing rigorous human judgement. Realising their potential will require transparent retrieval architectures, robust benchmarking, and explicit educational integration to preserve clinicians’ evaluative reasoning. Used judiciously, these systems could enrich medical research and practice; used uncritically, they risk amplifying errors at scale.


 Citation

Please cite as:

Wong MYH, Ong AY, Merle DA, Keane PA

Deep Research Agents: Major Breakthrough or Incremental Progress for Medical AI?

J Med Internet Res 2026;28:e88195

DOI: 10.2196/88195

PMID: 41886751

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