Claude Fable 5.1 is generally available in GitHub Copilot
GAVerifiedAdded Sep 22, 2026
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.
Topics: AI agents, LLMs, Governance, Pricing, Developer tools
Summaries of vendors' own notes. Product names and logos belong to their owners; logos via logo.dev.
More GitHub Copilot releases
Every GitHub Copilot release| Date | Release | Type |
|---|---|---|
| Sep 1 | Set an expiration date for individual user budgets GA | GA |
| Sep 1 | Copilot code review can now approve pull requests Preview | Preview |
| Sep 2 | Enterprise-managed settings support any default model GA | GA |
| Sep 2 | Content exclusions generally available in Copilot app and CLI GA | GA |
| Aug 31 | Copilot model access update for GitHub Team plans Update | Update |
| Aug 31 | Selected GitHub Copilot models deprecated Deprecation | Deprecation |
| Aug 31 | GitHub Copilot in VS Code, August 2026 releases Update | Update |
| Sep 3 | Upcoming deprecation of selected GitHub Copilot models Deprecation | Deprecation |
