LabAI
Anthropic: Fermat’s Last Theorem formalized in Lean
- The proof comprises 13 million lines of Lean code and around 29,500 intermediate theorems.
- According to Anthropic, Claude agents took eleven days; Kevin Buzzard compiled the code himself.
- The project delivers no new mathematics; independent assessment is still largely pending.
13 million lines of Lean codeSize of the computer-checked formalization generated by Claude