Anthropic shuts down Mythos access after sweeping U.S. order
Key takeaways
- A U.S. official confirmed that the Commerce Department sent the letter.
- Never before has the U.S. government taken such sweeping measures to rein in foreign access to frontier AI models developed by an American company.
- “We disagree that the finding of a narrow potential jailbreak should be cause for recalling a commercial model deployed to hundreds of millions of people,” Anthropic said in its website post.
Dario Amodei, chief executive officer and co-founder of Anthropic, speaks onstage during the 2025 New York Times Deal Book Summit at Jazz at Lincoln Center on Dec. 3, 2025, in New York City. (Michael M. Santiago / Getty Images) By Maggie Eastland and Hadriana Lowenkron June 13, 2026 6:09 PM PT 7 min Click here to listen to this article Share via Close extra sharing options Email Facebook X Linked In Threads Reddit Whats App Copy Link URL Copied! Print 0:00 0:00 1x This is read by an automated voice. Please report any issues or inconsistencies here.
Anthropic PBC has disabled access to its most advanced artificial intelligence models, including Mythos, following an unprecedented order by the Trump administration to keep the technology out of the hands of all foreign nationals.
The U.S. government told Anthropic to suspend access to the Fable 5 and Mythos 5 models by any foreign national “whether inside or outside the United States,” citing national security concerns, the company said in a statement.