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US Commerce Secretary Howard Lutnick said he took action against Anthropic’s latest Mythos and Fable AI models because officials feared they could be deployed by military intelligence users in China, Russia or other countries of concern.

Lutnick noted the risk in a letter sent to Anthropic CEO Dario Amodei on Friday, ordering the company to suspend export of the AI models to destinations worldwide and all foreign nationals, wherever located, according to a copy of the letter seen by Reuters on Monday.

Senior Anthropic technical staff met with officials at the Department of Commerce in Washington on Monday to negotiate a solution, a Trump administration official said.

The stakes are high, with the government seeking assurances the models cannot be used to harm the US, while Anthropic is pushing to restore access to its top-tier models after taking them offline for all users on Friday.