Washington Orders Anthropic to Cut Off Foreign Access to Two Frontier Models

The US government, citing national security authorities, issued an export-control directive ordering Anthropic to suspend all access to its Fable 5 and Mythos 5 models by any foreign national, whether inside or outside the United States, including the company's own foreign-national employees. Anthropic says it received the order on June 12 and disabled both models to comply, while leaving its other models running.

The government did not detail its concern in the letter. Anthropic's stated understanding is that officials believe they identified a method of jailbreaking Fable 5, meaning a way to bypass the model's safety restrictions. The company disagrees that a narrow jailbreak should justify recalling a commercial model used by hundreds of millions of people, arguing that applying the same standard industry-wide would halt new frontier deployments altogether.

Weigh who benefits if the rationale holds. A genuine, severe jailbreak in a frontier model is a real security event, and a government acting on classified evidence has reasons it will not publish. But the precedent is what engineers and enterprises should track. This is access control applied to a deployed model, not to chips or weights, and it reached foreign staff inside the United States. Al Jazeera reported the order's scope across all foreign nationals regardless of location.

What is verified is the directive and the shutdown. What remains asserted, on both sides, is whether the underlying vulnerability warranted it.