U.S. Ends 18-Day Worldwide Ban on Anthropic’s Fable 5 and Mythos 5 AI Models

The Commerce Department ended a worldwide suspension of two Anthropic models on June 30 after two weeks of review. Access will resume July 1. The action reverses the first U.S. export controls applied to a specific AI model.

Jun 30, 7:23 PM(12 days ago)·1m read17 sources

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U.S. Ends 18-Day Worldwide Ban on Anthropic’s Fable 5 and Mythos 5 AI Models

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The U.S. Department of Commerce lifted export controls on Anthropic’s Claude Fable 5 and Mythos 5 AI models on June 30, 2026, ending a worldwide suspension that began June 12. Anthropic said it will begin restoring access to users on July 1.

Commerce Secretary Howard Lutnick stated that the department worked with the company over two weeks to analyze and approve Fable 5, with the goal of aligning U.S. government agencies and strengthening American leadership in AI. Some restrictions on Mythos 5 had already been eased on June 26.

A June 12 letter from the Commerce Department had required government permission before any foreign national could access the models. Anthropic disabled both models worldwide the same day. The episode marked the first time the U.S.

Government applied export controls to a specific AI model. Anthropic pledged to strengthen safeguards against users circumventing the models’ safety features and said it would continue working with officials to reduce the risk of jailbreaks. The company thanked users for their patience during the suspension.

Anthropic is preparing for a potential initial public offering and has faced separate legal disputes with the Pentagon over supply-chain designations.