Colosseum: Auditing Collusion in Cooperative Multi-Agent Systems

Evidence card

Claim

Auditing agent communication and action for collusive behavior is an active research direction.

Evidence level

Emerging evidence

Source

https://arxiv.org/abs/2602.15198

Publication date

2026-02-16

Authors or institution

Mason Nakamura, Abhinav Kumar, Saswat Das, Sahar Abdelnabi, Saaduddin Mahmud, Ferdinando Fioretto, Shlomo Zilberstein, Eugene Bagdasarian

System tested

Cooperative multi-agent tasks with artificial secret-channel conditions and measurable regret.

Limitations

Preprint; artificial settings and measured regret may not map directly to every deployment.

What the evidence does show

Auditing agent communication and action for collusive behavior is an active research direction.

What the evidence does not show

That collusion effects will be large in ordinary production systems.

Date last reviewed in UTC

2026-06-26T00:00:00Z