Anthropic says its Claude model autonomously wrote the first complete, computer-checked proof of Fermat's Last Theorem in the Lean language, finishing in 11 days and drawing a public endorsement from mathematician Kevin Buzzard.
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Transcript
Anthropic says its Claude model just did something nobody has finished before. It spent eleven days working almost entirely on its own, writing out a complete, computer checked proof of Fermat's Last Theorem. Thirteen million lines of code, in the formal language Lean. Thirty thousand three hundred theorems along the way. Andrew Wiles proved this back in 1995, but nobody had converted his proof into something a computer could mechanically verify start to finish. Claude did it with a swarm of coding agents splitting the proof into pieces and checking each one against Lean's kernel. And it's not just Anthropic's word for it. Kevin Buzzard, a mathematician at Imperial College London, reviewed the whole thing and backed it. That's the part that actually matters.