US directive forces global suspension of Claude Fable 5 and Mythos 5
A US export-control directive prompted Anthropic to disable Claude Fable 5 and Mythos 5 for all customers after the government cited a reported safeguard bypass and national-security concerns.
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Why it moved the index
Anthropic's dated notice confirms that a government directive immediately removed access to two highly capable models worldwide while a reported jailbreak was investigated. This is a concrete intervention that reduced deployment and misuse exposure, although the process lacked disclosed technical detail and proved temporary.
Assessment history
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R1
Away 38 · confidence 88
New model-specific government access restriction with immediate worldwide deployment impact.
11 Aug 2026
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DoomBench assesses “US directive forces global suspension of Claude Fable 5 and Mythos 5” as evidence moving away from doom, with magnitude 38 and confidence 88 out of 100 in the governance and control category.
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The DoomBench assessment of “US directive forces global suspension of Claude Fable 5 and Mythos 5” is based on reporting from Anthropic and records the editorial rationale, source quality, attribution, and revision history.
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DoomBench summarizes “US directive forces global suspension of Claude Fable 5 and Mythos 5” as follows: A US export-control directive prompted Anthropic to disable Claude Fable 5 and Mythos 5 for all customers after the government cited...
https://www.doombench.com/news/us-directive-forces-global-suspension-of-claude-fable-5-and-mythos-5-2026-06-12