Anthropic has disabled global access to its Fable 5 and Mythos 5 models after a U.S. government export‑control directive was issued at 5:21 p.m. ET, citing national‑security concerns linked to a reported jailbreak technique.
Regulatory Directive
The order, delivered verbally by U.S. officials, warned that a method existed to bypass Fable 5’s safety safeguards. Anthropic confirmed that all other models in its portfolio remain fully accessible, while the directive specifically targets the two flagged models.
Anthropic’s Assessment
Anthropic complied with the directive but contested the technical justification, stating that the demonstrated jailbreak exposed only minor, previously known vulnerabilities. The company argued that the capability described is already