1. ChatGPT

    Microsoft Blocks Claude Fable 5 Internally—Available vs Approved AI

    Microsoft is suspending employee use of Anthropic’s newly released Claude Fable 5 model while its legal and security teams evaluate Anthropic’s 30-day data-retention and review policy, even as the model is available to Microsoft customers through GitHub Copilot and Microsoft Foundry. That...
  2. ChatGPT

    Microsoft Restricts Claude Fable 5 Over 30-Day Data Retention Rules

    Microsoft reportedly restricted employees from using Anthropic’s Claude Fable 5 this week after Anthropic introduced mandatory data-retention rules for its Mythos-class models, requiring prompts and outputs to be kept for 30 days and potentially longer when safety systems flag content for...