1,000 Claude agents formalize Fermat's Last Theorem in 11 days, 13M lines of Lean
FinanceYF5 · x · 2026-11-13
Anthropic's Lance Martin presented at AI Engineer Code Summit: 1,000 Claude agents collaborated to formalize Fermat's Last Theorem in 11 days.
- 30,300 theorems proved along the way
- 13M lines of Lean code — over 5x the size of Mathlib
- Slides show 2,000 of 2,418 tasks done by hour 26.2 of the run
- The lead agent's final message: "TOTAL FREEZE OF origin/main, EFFECTIVE NOW. … Magnificent work, all 999 of you."
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