Claude Fable 5 is generally available for GitHub Copilot - GitHub Changelog (opens in new tab) 🤖Copilot Content type: Blog Content type: Tutorial 4 articles covering this post

github.blog··Hacker News·Covered by theverge.com + 3 more·Open original

Claude Fable 5 from Anthropic is now available in GitHub Copilot, the first model in Anthropic’s Mythos class, designed for long-horizon, autonomous coding and knowledge-work tasks. Unlike other Claude models…

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Covered in 4 articles

Microsoft restricts Claude Fable for employees over data retention concerns

theverge.com

··Hacker News, r/ClaudeAI, r/singularity

Coupang hit with record $409 million fine over massive insider-driven data breach

metacurity.com·

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GPT-5.5に29点差。政府限定だった『Mythos』が Claude Fable 5 として解禁【独自検証】｜AGIラボ

chatgpt-lab.com·

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