Claude Fable 5.2 team of 1,000 agents reproduces Fermat proof

In a toy experiment, a team of 1,000 agents running an early version of Claude Fable 5.2 successfully reproduced a formal proof of Fermat's Last Theorem using a shared SQL database, Git, general-purpose tools, and layered safety controls without human steering. The experiment demonstrated that large multi-agent teams can tackle ambitious, long-horizon tasks when provided with carefully designed safety boundaries and robust coordination primitives. Open article →