Microsoft restricts internal use of Anthropic's Claude Fable 5 over data retention policy concerns
By
Tom Warren
Toasted to a respectable shade. No regrets, no crumbs left.
Summary
Microsoft is restricting internal employee access to Anthropic's newly released Claude Fable 5 (Mythos-class AI model) due to concerns over Anthropic's new data retention requirements. While the model was quickly made available to GitHub Copilot and Foundry customers, it was not added to the internal model picker Microsoft employees use. Other Claude models remain available internally as they operate under Zero Data Retention policies. Microsoft's legal teams are currently evaluating the changes.
Key quotes
· 3 pulledSources tell me that Microsoft is limiting the use of Claude Fable 5 for employees because of Anthropic's new data retention requirements.
While Microsoft quickly rolled out Claude Fable 5 to its GitHub Copilot and Foundry customers, I'm told the model isn't available in the model picker that Microsoft employees use for internal versions of GitHub Copilot.
All other Claude models are still available internally at Microsoft, because they operate under Zero Data Retention.
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