The US government ordered Anthropic to suspend all access to its Fable 5 and Mythos 5 models, citing national security concerns about a potential jailbreak. According to Anthropic's statement, the government demonstrated a technique for asking the model to audit code for vulnerabilities—a capability the company says is routine, already present in other publicly available models, and used daily by security professionals. The directive was delivered today and affects all customers globally. Other Anthropic products remain unaffected.

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