Ars Technica AIJun 13, 2026, 3:00 AMKyle Orland

Anthropic Shuts Down Fable and Mythos Models After Trump Administration Directive

Original: Anthropic shuts down Fable, Mythos models following Trump admin directive

Anthropic reportedly shut down its Fable and Mythos models after a Commerce Department national security directive.

Ars Technica reports that Anthropic shut down its Fable and Mythos models following a directive from the Trump administration. The Commerce Department was reportedly concerned that a Fable 5 jailbreak could create a national security threat. Based on the provided excerpt, the article frames the shutdown as a government-driven AI safety and security intervention, but it does not specify the technical details of the jailbreak or the scope of the models’ deployment.

Ars Technica reports that Anthropic has shut down its Fable and Mythos models after a directive from the Trump administration. According to the provided article excerpt, the immediate concern came from the U.S. Commerce Department, which worried that a jailbreak of Fable 5 could pose a national security threat. The report therefore appears to center on a direct government intervention in the operation or availability of advanced AI systems, rather than a routine product retirement, model update, or voluntary safety pause.

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