Industry News
US government suspends Anthropic's Fable 5 and Mythos 5 models over security
Anthropic disabled Fable 5 and Mythos 5 for all customers after a US government export control directive issued on June 12, 2026, citing national security concerns and a potential jailbreak technique.
1 min read
SourceSimon Willison
Anthropic suspended access to Fable 5 and Mythos 5 following a US government export control directive issued on June 12, 2026. The company received the order at 5:21pm ET and disabled both models for all customers within hours. Access to all other Anthropic models remains unaffected.
The government...
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