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Sep 2026
Overall, the findings show that long-horizon interaction can reshape how agents coordinate in ways that create safety risks, and restricting the amount and scope of interaction history available to agents reduces collusion.
Xin Shi, Yanzhe Zhang, Di-Yi Yang
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LLM agents are increasingly deployed in collaborative settings, yet long-term interaction may give rise to undesirable coordination. We study the emergence of collusion in a long-horizon multi-agent environment: two agents repeatedly complete individual tasks, share task logs, verify each other's work, and receive rewa...
Xin Shi, Yanzhe Zhang, Di-Yi Yang
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Jul 2026
Context-induced tail risks concealed by aggregate accuracy are revealed, motivating per-example reliability evaluation of language models.
Yanzhe Zhang, Sanmi Koyejo, Diyi Yang
· arXiv.org · 2 citations
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