US blocks foreign access to Anthropic's most advanced AI models, Axios reports - Reuters

<a href="https://news.google.com/rss/articles/CBMivAFBVV95cUxQNzRyRDNxVmtPaENsR1pja0NuWUNDSklfUXRRemdJREJlWGpHM01PbTVwSWFZdThLT0p4S3J3aEJ0UDNoM2FXYTJPV3pkSGY3TXJsNVVkejFjbWlhUDNISkoxRk1wWGpwb09Jc0QxWFl5czVtYkd4Z3R2dmFmT2dGQ0Z3UjZ0UXJXdThXVDdtamt0aWwzc3FPdXhMX21iTVpkeHVPWjJSSE80MDZKWHdGUmdCN2hXVWlvNkgwUA?oc=5" target="_blank">US blocks foreign access to Anthropic's most advanced AI models, Axios reports</a>&nbsp;&nbsp;<font color="#6f6f6f">Reuters</font>

The Trump administration is blocking foreign governments, companies, and individuals from accessing Anthropic's most advanced AI models, Axios reported on Friday. Reuters could not immediately verify the report.

The Trump administration is blocking foreign governments, companies, and individuals from accessing Anthropic ... , Axios reported on Friday. Reuters could not immediately verify the report.

Anthropic PBC said the US government has issued an export control directive to suspend all foreign access to its Fable 5 and Mythos 5 artificial intelligence models. The US government, citing national security authorities, has issued an export control directive to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees, it said in a post on X.

The U.S. Commerce Department has placed Anthropic's Mythos 5 and Fable 5 AI models under strict export controls, barring foreign governments, companies, and individuals from accessing them, citing national security concerns.

In a growing AI arms race, both the U.S. and China are restricting foreign AI technologies amid mutual security concerns, with China warning against using U.S.-based AI models like Anthropic's Fable, while U.S. consumers increasingly use advanced Chinese AI models due to cost and accessibility.

The U.S. government on Friday ordered Anthropic to immediately shut off access to two of its most powerful AI models — Claude Fable 5 and Claude Mythos 5 — citing national security concerns. Anthropic announced on X that it has complied, but it made clear it thinks the government got this one wrong. The directive, which Anthropic said it received on Friday at 5:21 pm ET, forces the company to disable both models for all users worldwide — not just the foreign nationals the government’s export control order was nominally aimed at. Access to Anthropic’s other models isn’t affected. Mythos is Anthropic’s most capable AI model, one the company previewed in early April and has kept tightly restricted ever since because of what Anthropic described as its exceptional ability to find security vulnerabilities in software.

Anthropic was forced to disable all access to its newest AI models, Fable 5 and Mythos 5, late on Friday after the U.S. government used national security export controls to bar the company from distributing the models to any foreign national. The directive includes not just people located outside the U.S., but also any foreign national in the U.S., including Anthropic’s own non-citizen employees. Given the scope of the directive, Anthropic argued it had no choice but to disable the models for all users.

Anthropic said it blocked its most advanced artificial intelligence models for public use after the U.S. government banned their use by foreigners. Anthropic released its Fable 5 and Mythos 5 models earlier this week, advertising them as the most advanced AI models given to the public to date. On Friday, the company received a directive from the U.S. government banning the models’ use by any foreign national, citing concerns over an alleged method to “jailbreak,” or bypass, the models’ security features. To comply with the demand, Anthropic suspended use of the model for all users, claiming that was the only way to cooperate with the order.

The Trump administration cited CFT concerns in blocking foreign access to Anthropic’s AI models, escalating a high-profile dispute. The administration banned Pentagon use of Anthropic tech, calling it a supply chain risk. A federal court briefly halted the ban, but restrictions remain in place. Risk-on assets like Anthropic’s cybersecurity model, Mythos, face hurdles as the administration denies expanded access. The move could delay the firm’s IPO and limit global earnings.

Anthropic, an artificial intelligence company, announced it has taken its latest AI models, Fable 5 and Mythos 5, offline in response to a directive from the Trump administration aimed at preventing use by foreign nationals. This move comes shortly after the public release of Fable 5, while Mythos 5 remained more restricted due to cybersecurity concerns. These U.S. export controls represent a major governmental effort to limit access to advanced AI technologies. Anthropic expressed disagreement with the government's handling, citing a lack of transparency and specific reasoning regarding national security. The company labeled the situation a 'misunderstanding' and hopes to restore model access soon. The Commerce Department has yet to comment. This development follows a recent executive order by President Trump, outlining a voluntary framework for evaluating national security risks of cutting-edge AI systems before public release.

Anthropic said it will “abruptly disable” its most advanced AI models for all users after the US government ordered it to suspend access to the models for foreign nationals, citing national security concerns. The company received the export control directive to suspend access to Fable 5 and Mythos 5 for all foreign nationals, without being given specific details of its national security concern, Anthropic said in a statement.

The Trump administration is blocking foreign governments, companies, and individuals from accessing Anthropic's most advanced AI models, Axios reported on Friday. Reuters could not immediately verify the report.

Washington has ordered Anthropic – a leading entity in America’s AI sector – to block all foreign nationals from accessing its latest models, Fable 5 and Mythos 5, citing national security concerns, according to the Silicon Valley-based firm. The unprecedented export-control measure – the first to target specific AI models – came just days after Anthropic released the models, underscoring Washington’s increasingly hands-on approach to regulating frontier artificial intelligence technologies. According to Anthropic’s statement, issued on Friday night, the directive arrived at 5.21pm Eastern time and extends even to Anthropic’s own foreign-born employees. Anthropic released Fable 5 and Mythos 5 on Tuesday, marketing them as its most powerful models to date. Both systems have similar underlying technical foundations, but only Fable 5 was released to the public with additional safety and security restrictions, while Mythos 5 was released only to trusted partners.