Anthropic Says US Limits Foreign Access to Fable 5, Mytho…

Anthropic has disabled access to its advanced AI models, including Fable 5 and Mythos 5, due to a directive from the U.S. government aimed at restricting foreign nationals from using the technology. The decision was made following concerns about national security, leading the company to suspend access to these models for all customers, both domestic and international. This action underscores the increasing scrutiny over the use of AI technology and its implications for national security.

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IPO Filing

Mythos Access Shut Down

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By Maggie Eastland and Hadriana Lowenkron

June 12, 2026 at 8:59 PM EDT

Updated on June 13, 2026 at 2:46 PM EDT

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Anthropic PBC has disabled access to its most advanced artificial intelligence models, including Mythos, following an unprecedented order by the Trump administration to keep the technology out of the hands of all foreign nationals.

The US government told Anthropic to suspend access to the Fable 5 and Mythos 5 models by any foreign national “whether inside or outside the United States,” citing national security concerns, the company said in a statement. A US official confirmed the Commerce Department sent the letter. The model developer has since shut off access to both systems to all customers to ensure compliance.

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Anthropic Says US Limits Foreign Access to Fable 5, Mythos 5