Just days after rolling out its latest AI models, Anthropic has been forced to remove Claude Fable 5 and Claude Mythos 5 due to an order from the Trump administration barring foreign use.
Anthropic pulled the AI models on Friday evening after sharing a statement about the U.S. government issuing an export control directive “to suspend all access to Fable 5 and Mythos 5 by any foreign national, whether inside or outside the United States, including foreign national Anthropic employees.”
As a result, Anthropic has disabled Fable 5 and Mythos 5 for all its customers in order to ensure compliance with the government’s order.
This order is the latest development in the ongoing feud between the Trump administration and Anthropic. Earlier this year, the U.S. government designated Anthropic as a “supply-chain risk” to national security. The dispute began after Anthropic requested a guarantee that its AI technology wouldn’t be used for mass surveillance or for certain weapons of war, following the signing of a $200 million contract with the government.
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Anthropic says it received the export control directive order from the U.S. government on Friday at 5:21pm ET. The company says the Trump administration cited national security authorities as the reason for the order barring foreign use of the AI models. However, the letter did not include any specifics about the national security concerns from the government.
The AI company says that it believes the government is aware of a method to “jailbreak” Fable 5. Anthropic says it “reviewed a demonstration of this specific technique being used to identify a small number of previously known, minor vulnerabilities.”
However, Anthropic is describing these vulnerabilities as “relatively simple” and it says other AI models, such as OpenAI’s GPT-5.5, are able to discover these vulnerabilities as well without requiring a bypass.
Anthropic’s Claude Fable 5 and Mythos 5 are promoted as its most powerful models yet. Anthropic rolled out Fable 5 to the public earlier this week. Fable 5 is a version of its Mythos model, which has been deemed too “dangerous” to launch to the public, with safety guardrails built in. In addition, Anthropic also released Claude Mythos 5, but only to its trusted test partners.
However, both models are now unavailable following the Trump administration’s directive.
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