US Government Orders Global Shutdown of Anthropic's Newest AI Models

WASHINGTON — The U.S. government on Friday ordered artificial intelligence company Anthropic to immediately suspend access to its two most advanced models, Claude Fable 5 and Claude Mythos 5, for all foreign nationals, citing national security concerns. The directive, issued just three days after the models’ public launch, prompted Anthropic to disable them for all users worldwide to ensure compliance.

The emergency export control directive was delivered by the Commerce Department on June 12, 2026, according to a statement from Anthropic. Because the company cannot reliably distinguish between domestic and foreign users in real-time, it took the unprecedented step of pulling both models from the market entirely. Access to all of Anthropic’s other models, including the widely used Claude Opus 4.8, was not affected by the order.

This sudden shutdown is a stark reminder for small and mid-sized businesses that integrating cutting-edge technology carries inherent operational risks. Companies that spent resources building workflows around Fable 5 in its first few days now face immediate disruption and wasted investment, a scenario we see too often when new tools outpace regulatory frameworks. The core issue here is dependency on a single, powerful platform whose availability can be revoked overnight by government action, with no warning and no recourse.

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The government has not publicly detailed the specific national security threat that prompted the order. In its statement, Anthropic said it believes the directive was triggered by the government learning of a method to “jailbreak” Fable 5. A jailbreak is a technique used to bypass an AI model's built-in safety features to elicit prohibited or harmful responses. The Commerce Department, which oversees the Bureau of Industry and Security responsible for such controls, did not immediately respond to requests for comment.

Anthropic disputes the severity of the potential vulnerability. The company stated it had conducted thousands of hours of internal safety testing, known as red-teaming, and had never discovered a universal jailbreak. It characterized the technique flagged by the government as exploiting “minor known vulnerabilities” that are also present in other publicly available models, specifically naming OpenAI’s GPT-5.5 as a comparable system. Anthropic said it believes the situation is a misunderstanding and is working with officials to restore access.

The two models at the center of the directive represent the frontier of Anthropic's technology. Mythos 5 was known for its powerful capabilities, particularly in areas like cybersecurity analysis, which led Anthropic to initially restrict its access to a small group of vetted partners. Fable 5 was launched on June 9 as the publicly available version of Mythos 5, equipped with extensive safety guardrails for general use.

The government's action marks a significant escalation in the regulation of advanced AI. It is believed to be the first time a major AI model has been forcibly removed from the market by a direct government order rather than a company's own volition. According to a report from Axios, the directive would require Anthropic to obtain a specific license for any “export, re-export or domestic transfer” of the Fable 5 and Mythos 5 models.

In its public communications, Anthropic warned of the broader implications of this action. The company argued that if the standard applied to Fable 5 were to be enforced across the industry, it could effectively halt the deployment of all new frontier AI models. The incident has sparked intense debate among industry analysts about the future of AI governance. Some see it as a necessary step to control potentially dangerous technology, while others view it as regulatory overreach that could stifle innovation.

The move suggests a potential shift toward treating the most powerful AI systems as dual-use technologies subject to the same kinds of export controls as advanced weaponry or cryptography. This could eventually lead to requirements for nationality or identity verification for users of all frontier AI models, a major operational shift from the current open-access environment.

The immediate future of Fable 5 and Mythos 5 remains uncertain. The industry is now closely watching how the Commerce Department proceeds and whether Anthropic will be successful in its efforts to have the models reinstated. The outcome of this situation will likely set a critical precedent for how the United States government regulates the development and deployment of artificial intelligence.