Anthropic’s Fable/Mythos shutdown is the first real model export-control shock

Short summary

US export controls forced Anthropic to shut down Fable 5 and Mythos 5 for foreign nationals, marking the first regulatory shock to frontier AI. Builders should decouple from single models, maintain fallback paths, treat model geography as a product requirement, and monitor policy as closely as API changelogs.

• •Anthropic disabled frontier models for foreign nationals due to alleged jailbreak and export-control directive
• •Frontier AI is now regulated infrastructure subject to geopolitical and national-security policy
• •Builders must treat model access as a strategic dependency with proper fallbacks and abstraction layers

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