U.S. Government Restricts Access to Anthropic's AI Models Fable 5 and Mythos 5 Over National Security Concerns

The U.S. Department of Commerce’s export control decree prompted Anthropic to disable global access to its AI models Fable 5 and Mythos 5. The action followed government concerns classifying the models as a national security risk, though specific technical or operational details of the threat were not disclosed. No dates were provided for when the models were disabled or when the decree was issued. The decision drew criticism from researchers and industry analysts, though the article does not specify the nature of their objections. The affected models, Fable 5 and Mythos 5, were part of Anthropic’s Project Glasswing under the Trump administration.