GPT-6.1 Sol agents reportedly beat Claude Opus 5.5 agents 6–1 in Mindustry

Y Combinator says it pitted 50 GPT-6.1 Sol agents against 50 Claude Opus 5.5 agents in Mindustry, with the GPT team winning six of seven matches. It says the groups formed hierarchies, communication systems and military strategies. In a separate nine-game Minecraft Bed Wars series with 10 agents per side, Y Combinator reported a 6–3 GPT win.