Anthropic says it will take Claude Fable 5 offline to comply with the US government order

Anthropy says so Disabling two AI models launched earlier this week, Cloud Fable 5 and Mythos 5in compliance with export control guidance received Friday afternoon from the US government due to national security concerns.

The unprecedented incident represents the latest flashpoint between… Anthropy and the Trump administration. While the company says the order required it to suspend access to “any foreign national, whether inside or outside the United States, including Anthropian employees who are foreign nationals,” it removed access for all of its customers to ensure compliance.

Earlier this year, the Trump Department of Defense described anthropology as “Supply chain risksAfter Cloud’s maker sought to draw red lines about how the US military would use its technology. The designation effectively banned government agencies and contractors from using Anthropic’s technology. Anthropic responded with Filing lawsuits Against the Trump administration.

On Tuesday, Anthropy was released publicly Cloud Fable 5a version of the company’s Mythos AI model with safeguards that prevent it from answering questions about cybersecurity, biology, and chemistry. Ahead of the public release, which Anthropic said it conducted in cooperation with the US government, it was released Mythos AI preview model It had a limited rollout in April. The goal was to give companies and organizations the opportunity to use it Strong cybersecurity capabilities to improve their defensesand allays concerns that the technology could be exploited by bad actors to develop powerful hacking tools.

In a Blog post Anthropic said on Friday that it received a message from the US government at 5:21 p.m. ET. “The letter did not provide specific details regarding its national security concerns,” Anthropic wrote.

The company added: “Our understanding is that the government believes it has become aware of a method to bypass or ‘jailbreak’ Fable 5.” “We reviewed a demonstration of this specific technique used to identify a small number of previously known minor vulnerabilities. These vulnerabilities all appear to be relatively minor, and we have found that other publicly available models are able to detect them as well without requiring overriding.”

In the blog post, the company argued that it had implemented strong safeguards to reduce the potential for misuse of Claude Fable 5. Anthropic also claimed that the jailbreak the US government found for Claude Fable 5 was narrow, and would not have made the attacker any more dangerous than he would have been with another AI model.

“So far, the government has only given us verbal evidence of a limited, non-universal jailbreak potential, which essentially consists of asking the model to read a specific code base and fix any software flaws,” the company said in its blog. “Our understanding is that one potential jailbreak has been shared with the government.”

Spokesmen for the White House and US Commerce Department did not immediately respond to WIRED’s request for comment.

Anthropic CEO Dario Amodei said in a policy op-ed earlier this week that he and the company support a fair, orderly, and transparent government process that would prevent the release of unsafe AI models. In the company’s blog post on Friday, Anthropic said “this action does not adhere to these principles.”