Claude Fable 5 Shutdown and Restoration: US Export-Control Timeline and Current Models
💡 TL;DR / Summary (BLUF) What happened: On June 12, 2026, a US export-control directive forced Anthropic to suspend Claude Fable 5 and Mythos 5. Unable to separate users by nationality in real time, Anthropic disabled both models for every customer worldwide. Resolution: The Department of Commerce lifted the controls on June 30, and Anthropic restored Fable 5 on July 1, 19 days after the suspension. Mythos 5 came back only for a set of approved US organizations. What to use now (September 2026): Fable 5.1 (shipped September 1, $10/$50 per million tokens) for the hardest work, or Opus 5.5 ($4/$20) as the cheaper heavy-coding default. Leaving your model on default is still the safest setting. “The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.” — Anthropic, official statement, June 12, 2026 ...