Anthropic Pulls Its Most Powerful AI Models After U.S. Bars Foreign Access - AOL

Anthropic pulled its two most powerful AI models after the United States barred foreign access under an export-control directive. Fable 5 and Mythos 5 were disabled for all foreign nationals, including Anthropic employees, forcing an abrupt halt in access and triggering customer disruptions on Saturday. The government’s action, described by The Wall Street Journal, marks a notable escalation in using export controls to restrict American AI technology overseas, a move that follows Anthropic’s prior stance against fully autonomous weapons by the U.S. military. Claude Fable 5 was introduced this week as a new model, with officials citing a potential narrow jailbreak as grounds for the restrictions. Commerce Secretary Howard Lutnick reportedly notified Anthropic in writing of these restrictions. The timing ahead of hoped-for U.S. IPOs adds pressure to the sector as rival SpaceX recently marked a high market valuation post-IPO, while OpenAI weighs a similar path. Pentagon officials stressed national security priorities, even as debates continue about innovation, ethics, and national interest.