According to AI commentator Nate B Jones, the US government has forced Anthropic to take its most advanced AI models—Fable 5 and Mythos 5—offline. Jones reports the order initially targeted foreign nationals, but the language was broad enough that compliance required a complete takedown for all users. He attributes the action to a reported jailbreak vulnerability and export control concerns. Jones notes this marks the first time a frontier model has been rolled back due to government intervention, signaling a shift where regulatory policy and access availability now carry as much weight as raw technical capability in shaping the AI landscape.

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