Access denied

The decision by US authorities to restrict foreign access to Anthropic’s latest AI models, Mythos 5, and Fable 5 may appear at first glance to concern a single company and a limited set of users. In reality, it signals a more significant shift in how governments are beginning to view advanced artificial intelligence (AI). Until now, policy attention has largely focused on restricting access to the sophisticated semiconductors needed to train and run frontier models.