github: Claude Fable 5.1 is generally available in GitHub Copilot

· Sujith Quintelier · Sept. 2, 2026, 7:53 a.m.
GitHub Copilot Claude Fable 5.1 software development Coding Techniques
Summary
GitHub Copilot has released Claude Fable 5.1, which is designed for long-horizon coding and knowledge work tasks.
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