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DeepStress: Stress-Testing Deep Search Agents

Primary research

#6

T1digested

Canonical URL: http://arxiv.org/abs/2607.13920v1
Topic: Agent Evaluation
First seen: 2026-07-16 19:07:57
Last seen: 2026-07-16 19:07:57

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arXiv2026-07-16 19:06:49
DeepStress: Stress-Testing Deep Search Agents
While search agents demonstrate impressive capabilities in multi-step question answering, their robustness to poor-quality evidence remains under-explored. This phenomenon occurs rarely in realistic benchmarks but can lead to dramatic failure in real life applications. Therefore in this study we propose DeepStress, a stress testing framework that controls the frequency of challenging evidence by replacing the retrieval module of search agents with a controlled synthetic environment. We use this framework to control three dimensions that can affect document reliability: trustworthiness, relevance, and factuality. Testing several search agents on HotpotQA and BrowseCompPlus, we demonstrate that agents exhibit substantial differences in their ability to handle unreliable information and propose new metrics that better document systems outcomes as well as the interactions between conflicting parametric and retrieved knowledge.