One prompt can now drive more of your work More support for defending infrastructure and open source See Claude’s rules updated for newer risks GPT-6 Intelligent UI makes conversations visual and interactive Claude Haiku 5.5 delivers low-cost, high-performance AI Create visual, interactive answers from a simple chat Run high-volume tasks with a cheaper fast model Share new mathematical results on GitHub to accelerate research Easier access to advanced Claude models for security work Run image, audio, and video search on-device with one model Atlassian integration makes company knowledge easier to use Decisions beta speeds up typed answers from text and images Anthropic expands safer access to advanced cyber features Enable text watermarking via API for EU compliance Claude training becomes easier for enterprise teams Anthropic invests in workforce training for enterprise adoption Enterprise adoption and training get easier Google's Gemini 4 Argon makes heavy tasks easier to offload Gemini 4 Argon is built for long professional tasks Use Astra-level performance affordably in daily work One prompt can now drive more of your work More support for defending infrastructure and open source See Claude’s rules updated for newer risks GPT-6 Intelligent UI makes conversations visual and interactive Claude Haiku 5.5 delivers low-cost, high-performance AI Create visual, interactive answers from a simple chat Run high-volume tasks with a cheaper fast model Share new mathematical results on GitHub to accelerate research Easier access to advanced Claude models for security work Run image, audio, and video search on-device with one model Atlassian integration makes company knowledge easier to use Decisions beta speeds up typed answers from text and images Anthropic expands safer access to advanced cyber features Enable text watermarking via API for EU compliance Claude training becomes easier for enterprise teams Anthropic invests in workforce training for enterprise adoption Enterprise adoption and training get easier Google's Gemini 4 Argon makes heavy tasks easier to offload Gemini 4 Argon is built for long professional tasks Use Astra-level performance affordably in daily work

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AI summarized from verified sources

Formal proof of Fermat's Last Theorem completed in 13M lines of Lean

Greatly reduces proof verification burden and accelerates research.

SOURCE CHECK

1 sources

VERIFIED

Sources

Primary / anthropic.com

Official Blog

Key Points

1Autonomous proof in 11 days
213M lines in Lean, largest ever
3Proved 29,500+ theorems

Anthropic's Claude created a complete formalized proof of Fermat's Last Theorem in 11 days. It proved over 29,500 theorems in 13 million lines of Lean code. AI assists in verifying mathematical knowledge.

What happened

Claude completed the formalized proof of Fermat's Last Theorem via multi-agent system. Validated by experts.

Impact

Could reduce refereeing burden and support AI-assisted math research.

What changed

Anthropic's Claude created a complete formalized proof of Fermat's Last Theorem in 11 days. It proved over 29,500 theorems in 13 million lines of Lean code. AI assists in verifying mathematical knowledge.