Anthropic’s flagship Fable 5 and Mythos 5 AI systems were removed from all public and enterprise access after the U.S. government issued an emergency export‑control directive on June 12, 2026. The order—triggered by Amazon’s disclosure that researchers had successfully jailbroken the models to produce cyberattack‑relevant information—required Anthropic to block all foreign‑national access immediately. Unable to enforce that restriction at cloud scale, Anthropic shut the models down globally, ending availability just three days after launch.
