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US Government Order Prompts Anthropic to Disable Claude Fable 5 and Mythos 5 for All Customers

  • Foundation Models
  • Policy & Regulation
  • Security

On June 12, 2026, Anthropic disabled its new "Claude Fable 5" and "Claude Mythos 5" models for all customers after a US government (Commerce Department) export control directive. The order required suspending access for non-US citizens, but because real-time citizenship verification is impractical, the company shut down both models worldwide.

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