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Why It Matters
Claude Fable 5.1 from Anthropic is now available in GitHub Copilot.
Provenance
Discovered via GitHub and published by GitHub.
Key Claims
Original description
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 tasks.… The post Claude Fable 5.1 is generally available in GitHub Copilot appeared first on The GitHub Blog .
Discovered via GitHub
Repository releases, trending projects, and developer updates.
Publisher: github.blog
ID: https://github.blog/changelog/2026-09-01-claude-fable-5-1-generally-available-in-github-copilot · Indexed about 4 hours ago