1,000 Fable agents formalize Fermat's Last Theorem in 30 hours; Opus 5.5 hits 26%

burny_tech · x · 2026-11-10

Claude's account showcased a team of 1,000 Fable 5.2 agents fully formalizing Fermat's Last Theorem in 30 hours, translating the proof into computer-checkable language step by step. With the same setup, Opus 5.5 completed only 26% in 18 hours and barely progressed further by 30 hours. The sharer quipped that Kevin Buzzard's £934K Imperial College grant to formalize Fermat is becoming an LLM benchmark before he finishes it.

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