Anthropic, a leading artificial intelligence research company, announced it will disable access to its latest top-tier AI models, Fable 5 and Mythos 5, following a directive from the Trump administration. The order, issued on national security grounds, prohibits foreign individuals and entities from using these models, effectively requiring Anthropic to cut off access to all users to ensure compliance.
National Security Concerns Prompt Action
In a blog post, Anthropic revealed it received a letter from the U.S. government at approximately 5:21 p.m. ET on Friday. The directive applies to all foreign nationals, including those employed by Anthropic, whether inside or outside the United States. While the government did not provide specific details about the national security risks, Anthropic speculated the concern may involve potential vulnerabilities in Fable 5 that could allow unauthorized access—a claim the company disputes as exaggerated.
The net effect of this order is to disable these models for everyone to ensure compliance with the government’s directive.
Anthropic’s Dispute with the Administration
This move marks the latest chapter in an ongoing clash between Anthropic and the Trump administration over AI safety and government oversight. Earlier this year, the Department of Defense labeled Anthropic as a supply chain risk, prompting the startup to file lawsuits challenging the designation. The company continues to contest the government’s findings, emphasizing its commitment to complying with the order while maintaining its disagreement.
Access to Anthropic’s other AI models will remain unaffected. The company has not specified an exact timeline for disabling Fable 5 and Mythos 5 but confirmed the action is imminent. The White House has not yet commented on the matter.