AI company Anthropic has switched off its Mythos 5 and Fable 5 models everywhere after an order from the U.S. government. The Department of Commerce said these advanced AI tools could be used for national security risks, so all users lost access. People who use AI to protect computers may find their work affected, similar to students who lose access to important online tools during exams.

The U.S. focused on "frontier" AI, meaning the most advanced models, because they are hard to control. Anthropic cannot check the citizenship of every user, so the company had to stop everyone from using them to follow the law.

Now, Anthropic is talking with government officials to find a way to restore access. Some experts think this U.S. move might change how AI products are shared or controlled in the future.