Claude Fable 5.1 Generally Available in GitHub Copilot as of September 1, 2026 | Tool Update
Anthropic's Claude Fable 5.1 is generally available in GitHub Copilot with gradual rollout in progress; the model requires data retention by default, while zer…
Published on MyPrivateClaw
Sep 2, 2026, 4:22 PM UTC
Coverage date
Sep 1, 2026
Last updated
Sep 2, 2026, 4:22 PM UTC
News summary
The model is accessible via model picker in Visual Studio Code, Visual Studio, Copilot CLI, GitHub Copilot coding agent, GitHub Copilot app, github.com, GitHub Mobile on iOS and Android, JetBrains IDEs, Xcode, and Eclipse. Copilot Enterprise and Copilot Business plan administrators must enable the Claude Fable 5.1 policy in Copilot settings, which is off by default. Claude Fable 5.1 requires data retention by default — Anthropic retains prompts and outputs to operate safety classifiers — while zero data retention access is available only for eligible enterprise customers under a time bound exemption until Enterprise Frontier Safeguards (EFS) launches; other Claude models except Fable 5 and Fable 5.1 continue to operate under zero data retention. Enterprise Frontier Safeguards (EFS) will provide zero data retention with state of the art safety monitoring, rolling out in phases later this…