Anthropic suspended all access to its Fable 5 and Mythos 5 AI models for foreign nationals on Friday, June 13, 2026 [2].

This move signals a tightening of U.S. control over advanced artificial intelligence exports and highlights the intersection of commercial AI development and national security priorities.

The U.S.-based company took the action following a federal directive regarding national security and export-control regulations [1, 4]. Some reports indicate the order came from the Trump administration [3], while others state U.S. authorities identified potential security flaws within the models [5].

"We have received a directive from the U.S. government that requires us to suspend access for foreign nationals to Fable 5 and Mythos 5," an Anthropic spokesperson said in a blog post [3].

The suspension occurred only three days [1] after the public launch of Fable 5. The speed of the reversal suggests an urgent government intervention to prevent the technology from being accessed outside U.S. borders.

Anthropic CEO Dario Amodei said, "The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers."

The company has not specified which foreign nationals are affected or whether the suspension is temporary. The directive targets two of the company's most powerful models, Fable 5 and Mythos 5, which were intended for wider distribution before the government intervened [3].

“"Anthropic is pulling the models just three days after launch."”

This action reflects an increasing trend of the U.S. government treating high-parameter AI models as strategic assets similar to advanced semiconductors. By restricting access to foreign nationals, the U.S. is attempting to maintain a technological lead and prevent adversaries from leveraging state-of-the-art AI for cyber warfare or intelligence gathering, even at the cost of disrupting global commercial AI markets.