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GitHub — Claude Fable 5.1 is generally available in GitHub Copilot

Sep 1, 2026 · about 15 hours ago

Claude Fable 5.1 is generally available in GitHub Copilot

Claude Fable 5.1 from Anthropic is now available in GitHub Copilot. The latest model in Anthropic’s Mythos class, Claude Fable 5.1 is designed for long-horizon, autonomous coding and knowledge-work ta…

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Claude Fable 5.1 from Anthropic is now available in GitHub Copilot

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