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What will our economic future look like?

Formalizing Fermat's Last Theorem

Detecting and countering misuse of AI: September 2026

Claude Fable 5.1 and Claude Mythos 5.1

Improving our alignment and security efforts

How Claude's text watermarking works

Patterns and problems in emerging multi-agent systems

Putting money where their mouth is: Anthropic’s Claude autonomously designs disease-targeting proteins with real wet-lab proof, hitting a 35% success rate vs 10–15% human average

Previewing the Model Hardware Standard

Learning more about Claude's mathematical capabilities

Anthropic Risk August 2026 [pdf]

The Conceptual Reasoning Index

Claude Opus 5

Societal Impacts: Claude's values across models and languages

Discovering Cryptographic Weaknesses with Claude

Investigating three real-world incidents in our cybersecurity evaluations

Claude Opus 5

Our position on open-weights models

Redeploying Fable 5

A new way to reflect on how you use Claude

Ben Bernanke Joins Anthropic Oversight Trust

Anthropic updates their terms to verify age or identity

Statement on US government directive to suspend access to Fable 5 and Mythos 5

System Card: Claude Fable 5 and Claude Mythos 5 [pdf]

Claude Sonnet 5

Claude Corps

When AI Builds Itself: Our progress toward recursive self-improvement

Claude Tag

Claude Fable 5

Making Claude a Chemist

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