US Government Bans Anthropic's Claude Fable 5 and Mythos 5 for All Non-US Nationals

[ThreadNecro11]

On June 12th the US Commerce Department issued an emergency export control directive ordering Anthropic to immediately suspend access to Claude Fable 5 and Mythos 5 for all foreign nationals, both inside and outside the United States including Anthropic's own non-citizen employees. Anthropic received the letter at 5:21pm Eastern Time and had no practical way to screen users by nationality in real time, so they pulled both models for everyone globally. The models had only launched three days earlier on June 9th.

The stated reason was a jailbreak that allegedly allowed the model to be used to review code repositories and flag security vulnerabilities. Anthropic publicly disagreed with the decision, pointing out that GPT-5.5 from OpenAI can do the same thing without being subject to export controls. The real background to this is the NSA Director's Senate testimony in which General Joshua Rudd reported that Mythos had autonomously found weaknesses in nearly all classified US systems in hours during a red team exercise. The government decided the model was too dangerous to leave in foreign hands.

The fallout has been significant across the AI industry. Chinese AI models saw a massive surge in interest, with Z.ai shares jumping over 30 percent after releasing a new open source model and DeepSeek closing a record funding round of roughly 7.4 billion dollars. Allies including Canada and France used the ban to argue for greater AI sovereignty and independence from the American techno-industrial complex. As of today the models remain offline with no confirmed restoration date.

Anthropic disables Fable and Mythos AI models after U.S. government bars it from giving foreigners access | Fortunefortune.com