Trump Orders Anthropic to Block Foreign Access to Mythos 5 and Fable 5 AI Models While Clearing Select Nvidia Chip Sales to China

U.S. President Donald Trump ordered Anthropic to block all foreign nationals inside and outside the United States from its Mythos 5 and Claude Fable 5 AI models last week. Anthropic removed both models from service to meet the directive.

The company had previously granted 200 institutions in 15 countries access to its Claude Mythos Preview model for vulnerability testing. The two public versions, Mythos 5 and Fable 5, had been scheduled for release in early June.

U.S. Government did not provide a reason for the order. The company stated its understanding that the Trump administration had become aware of a method of jailbreaking Fable 5. ” The G7 countries discussed a potential “trusted partner” scheme for access to the most advanced AI models during a closed-door session.

Few details of the proposal were released. U.S. technology. Bruno Retailleau, a former French minister, wrote on X that the ban should be a “wake-up call” to Europe and that nations must treat AI as part of their sovereignty.

U.K. U.S. briefly introduced a tiered export model for advanced semiconductor chips in early 2025 during the final weeks of former President Joe Biden’s term. That “small yard, high fence” scheme was scrapped by the Trump administration in May 2025, which later cleared the Nvidia H200 chip for sale to a limited number of Chinese firms.

German media reported in April that the country’s armed forces would not award contracts to Palantir, citing concerns about granting private firms access to national data systems. U.S. technology.

Marcin Jerzewski, head of the Taiwan office of the European Values Center for Security Policy, said the controversy could benefit European AI firms such as Paris-based Mistral, the EU’s only major homegrown frontier-model competitor.