50 GPT Agents Beat 50 Claude Agents 6-1 in 9.5-Hour Mindustry Swarm Series

ycombinator · x · 2026-10-30

In YC's Mindustry experiment — a Factorio-like factory-building game with military strategy — 50 GPT-6.1 Sol agents defeated 50 Claude Opus 5.5s 6-1 over seven consecutive PvP matches lasting 9.5 hours, with both swarms forming their own hierarchies, communication systems, and military strategies.

Related event: YC Swarm Experiments: GPT vs Claude Agents Compete and Build Bureaucracies in Games(9 posts)→

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