Anthropic (Claude) · 9 November 2026

Claude Fable 5.2 and Mythos 5.2

Introducing Claude Fable 5.2 and Claude Mythos 5.2, our new models for the hardest technical challenges.

Anthropic (Claude) published this announcement on 9 November 2026. Claude models are available in One IA: switch the chat to Pro and pick a Claude model to try them, or let Lite mode choose the best model for you.

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