June 13, 2026

Anthropic shuts down access to AI models after US government ban

Anthropic has halted access to its latest AI models, Fable 5 and Mythos 5, after the U.S. government issued a ban on the use of advanced AI technologies by foreign nationals due to national security concerns. This action aligns with new export control directives that require AI companies to impose restrictions on their most powerful models in response to these security issues.

Anthropic: Anthropic is an artificial intelligence laboratory that develops advanced frontier models, including the Claude family and the recently released Fable and Mythos series. The company emphasizes building capable and reliable AI systems primarily for enterprise and research use. It complied with a recent U.S. government directive by disabling access to its newest models to prevent use by foreign nationals.
U.S. government: The U.S. government implements national security policies, including export controls on sensitive technologies under the Trump administration. It has directed restrictions on advanced AI model access by foreign nationals to address potential risks. This includes actions by the Commerce Department targeting distribution of powerful AI systems.

AI Models: Anthropic has launched new frontier AI models Fable 5 and Mythos 5, which were placed under immediate compliance restrictions following the government order.
Regulation: The U.S. government has issued export control directives requiring AI companies to restrict access to their most advanced models by foreign nationals over national security concerns.

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