The Department of Commerce has lifted export controls on Claude Fable 5 and Mythos 5, allowing Anthropic to restore access to these models. The decision comes after Anthropic took steps to address security risks associated with the models and agreed to work with the US government on protocols and standards. The export controls had previously limited access to the models, affecting various teams and projects. The lifting of these controls is expected to have significant implications for the development and use of AI models.