U.S. Government Export-Control Directive Suspends Anthropic's AI Models Claude Fable 5 and Mythos 5 Globally

On June 12, 2026, the U.S. government issued an export-control directive that prompted Anthropic to globally suspend its AI models Claude Fable 5 and Mythos 5. The suspension followed reports of a jailbreak involving a code-analysis capability routinely used by security defenders. No specific technical details, CVE IDs, or quantitative impacts were disclosed in the directive or suspension notice. The incident was triggered by regulatory concerns rather than a traditional vulnerability or exploit. The action affected worldwide availability of the models without further clarification on operational disruptions.