Anthropic halts use of the Fable 5 model by order of the U.S.

▤ Summary

Anthropic has paused the rollout of its Claude Fable 5 model for enterprise users after a U.S. government order. The company says new sessions are now routed to the previous Opus 4.8 model, while Fable 5 sessions return errors. The restriction follows an executive order requiring AI companies to give the federal government 30 days of access to foundation models before partner launches. Anthropic says it is complying even though it disputes the jailbreak rationale, and it warns that similar rules could slow future frontier model deployments across the industry.

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Anthropic

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