1,000 Fable 5.2 agents fully formalize Fermat's Last Theorem in 30 hours

likeastar20 · reddit · 2026-11-10

Claude's official account announced that a team of 1,000 Fable 5.2 agents fully formalized Fermat's Last Theorem in 30 hours, translating the proof into a machine-checkable language. With the same setup, Opus 5.5 completed only 26% in 18 hours and barely progressed afterward (27% at 30 hours), while Fable 5.2 hit 86% by hour 18 and 100% at hour 30. A landmark demonstration of large-scale agent collaboration in formal mathematics.

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