US Government Forces Anthropic to Shut Down Claude Fable and Mythos Over Jailbreak That GPT-5.5 Does Natively

On Friday evening, the United States government compelled Anthropic to shut down access to its advanced AI models Claude Fable and Mythos. The trigger was a narrow jailbreak—a type of exploit Anthropic had previously warned existed. However, critics note that all outputs produced by the jailbreak can be generated by GPT-5.5 without any special bypass. When Anthropic's CEO Dario tried to explain there was no real threat, the White House refused to listen and instead imposed an export restriction that forced the models offline globally.

The incident has sparked outrage among AI experts. Dean W. Ball described the action as making the world 'dumber' and compared the government to a dying hospice patient lashing out. The author warns of two possible interpretations: either this is a terrible misunderstanding that can be resolved quickly (but still sets a harmful precedent), or it signals a rapid escalation toward authoritarian control over AI labs. The event demonstrates that the government is willing to shut down powerful AI systems even at great economic and political cost, emphasizing the urgent need for clear, rational regulation before further haphazard actions occur.