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Jun 13, 2026
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US Government Orders Anthropic to Disable AI Models for Foreign Nationals

AI Summary
The US government has ordered Anthropic to disable its AI models, Fable 5 and Mythos 5, for all foreign nationals, citing national security concerns. The company has complied with the order, blocking access to the models for foreigners, including those working at Anthropic.

The US Government's Directive to Anthropic

The AI firm Anthropic has blocked access to its newly released cutting-edge software, following an order by the United States government.

In a blog post published Friday, the company behind the Claude chatbot said government agencies had instructed it to prevent all foreign nationals from accessing the AI models Fable 5 and Mythos 5, citing national security concerns.

Details of the Order and Its Implications

Anthropic said it received the order at 5:21pm (21:21 GMT) on Friday and that the letter did not explain the government’s specific security concern in detail.

The ban also affects foreigners currently in the US – including those working at Anthropic.

As a result of the order, the company had to cut off access for everyone at short notice, it said.

The Capabilities of Anthropic's AI Models

The artificial intelligence behind Anthropic’s Mythos AI model is particularly adept at detecting software vulnerabilities, some of which have remained undiscovered for decades.

This capability has been used by US authorities and selected companies to plug security gaps.

However, a concern from the outset has been that such AI could become a dangerous cyberweapon in the wrong hands.

The Future of AI Development and Security

Earlier this month, Anthropic proposed that the world’s top artificial intelligence companies coordinate to pause development of advanced AI systems, warning that the technology is improving so quickly that there is a risk humans would lose control.

The company said in a blog post in early June that, as cutting-edge AI gets increasingly faster at carrying out tasks, “it would be good for the world to have the option to slow or temporarily pause” its development.