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Anthropic's Claude now writes code and proves it safe automatically.

The DecoderIndependent reporting·
AI brief

Anthropic had Claude generate mathematical proofs that existing code is correct, producing roughly 180 million lines of proof code for 123 open-source libraries, and the model caught bugs that years of testing had missed.

Why it matters: If the approach holds up, automated proof generation could verify software correctness at a scale manual methods cannot match.

Written by AI from The Decoder's published text.

Background

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Source

“Anthropic had Claude generate mathematical proofs that existing code is correct, producing roughly 180 million lines of proof code for 123 open-source libraries. Along the way, the model caught bugs that years of testing had missed.”
The Decoder, 23 Oct 2026, 11:32.

Reporting from a publisher outside the organisation being covered.

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