Claude Fable 5 generally available in GitHub Copilot

Anthropic@githubJun 9, 2026

šŸ“£ Claude Fable 5, the first in @AnthropicAI's Mythos model class, is now generally available and rolling out in GitHub Copilot. It is designed for long-horizon, autonomous coding and knowledge-work tasks. Try it out in @code or the GitHub Copilot app. ā¬‡ļø https://t.co/jJTqh35jjY https://t.co/tM3L1znxV2

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Launched Jun 9, 2026View post

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