US Government Orders Anthropic to Disable Fable 5 and Mythos 5 for All Foreign Nationals — Anthropic Disputes the 'Jailbreak' Rationale
On Friday June 12 at 5:21pm ET the US government issued an export-control directive forcing Anthropic to suspend all access to Fable 5 and Mythos 5 for any foreign national worldwide (including its own foreign-national employees), citing a national-security 'jailbreak' concern; to comply, Anthropic disabled both models for every customer at ~6:59pm PT. Anthropic publicly contests the rationale, saying the demonstrated technique only surfaced a few minor, already-known flaws and is widely available in other models including OpenAI's GPT-5.5. Simon Willison flagged the statement within hours, and CNBC, Bloomberg, CNN, NBC, and Fortune all corroborate — this is the sharpest escalation yet of the ongoing Anthropic–government standoff.
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