50 GPT-6.1 Sol agents fail to build Minecraft civilization

The experiment is notable less for the failure itself than for how the agents got there. Early on, the 50 agents explored and felled nearly every tree within reach of the spawn point within 90 seconds, and an agent named Ada emerged as de facto leader without any discussion — 46 of the other 49 agents sent their first direct message to Ada. Ada posted a colony-building plan covering farmland, sapling protection, shelter coordinates and priority resources, and later issued rationing rules as food ran short after the third night.

The team also highlighted bureaucratic behavior: roles such as "fishing rod officer" appeared, low-level agents asked permission to harvest grass, and four agents spent 11 minutes applying a single bone meal to a single wheat field. Fishing became a key food source because it was low-risk, and a system of fishing, cooking, distribution and delivery emerged.

A second experiment pitted 10 Claude Opus 5.5 agents against 10 GPT-6.1 Sol agents in bed wars, with GPT-6.1 Sol winning 6-3. The same pattern of the first-listed agent becoming leader was observed there too, and the team says it is now running a 25-agent GPT-6.1 Terra experiment streamed on Twitch.