Decision on Anthropic’s Fable and Mythos models means the U.S. has a licensing regime for frontier AI—it just doesn’t want to admit it

The U.S. government imposed export controls on Anthropic’s Fable and Mythos AI models after Amazon discovered a jailbreak in Fable’s cybersecurity guardrails. Anthropic has sought to reverse the decision, while reactions range from criticism in Europe to optimism in China. Cybersecurity experts argue the controls may hinder defensive uses of the models.