On June 12, 2026, a US export control directive forced Anthropic to disable Claude Fable 5 and Mythos 5 worldwide after a narrow jailbreak was found that made the models reveal code flaws. The shutdown was driven by deemed-export rules that treat model output shown to a foreign national as an export, making a global off switch the only compliant option. #Anthropic #ClaudeFable5 #Mythos5 #DeemedExport #USCommerce
