US lifts restrictions on powerful AI models Fable, Mythos, Anthropic says

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AI firm says it will begin restoring access to Claude Fable 5 and Mythos 5 after removal of export controls.

The United States government has lifted its restrictions on foreign access to Anthropic’s most powerful AI models, the company has announced.

Anthropic said late on Tuesday that it would begin restoring access to Claude Fable 5 and Mythos 5 from tomorrow after the US Department of Commerce notified the company that it had removed its export controls.

“We’re grateful to our users for their patience, and to everyone who worked with us on redeploying the models,” Anthropic said in a statement posted on X.

In a letter to Anthropic that was widely circulated online, US Commerce Secretary Howard Lutnick said the company no longer required an export licence as it had agreed to “proactively detect and address security risks associated with the models,” to work with the government on standards for upcoming models, and to inform the government of “malicious activity”.

Anthropic abruptly shut off Claude Fable 5 and Mythos 5 last month after US President Donald Trump’s administration ordered the company to restrict all foreign nationals, including company employees, from accessing the models.

Anthropic said at the time that the government had not provided a specific reason for the order beyond unspecified national security concerns, but that it believed that officials were worried about security vulnerabilities in Fable 5.

On Friday, the San Francisco-based company said that it had been granted approval to provide the models to US organisations that “operate and defend critical infrastructure”, and that it was working with the government to restore general access for the public.

More to follow…