# Model Shutdown Articoli collegati

Anthropic Pre-IPO Market Falls After US Directive Forces Model Shutdown

The U.S. government directed Anthropic to globally suspend access to its Claude Fable 5 and Claude Mythos 5 AI models for all foreign nationals, citing national security concerns. The emergency export control order followed reports of a non-universal jailbreak vulnerability. Anthropic pushed back, arguing the government provided only verbal evidence of a narrow prompt technique to find minor, known software flaws, and warned that applying such a standard broadly could halt new model deployments across the frontier AI industry. The directive impacted Anthropic's pre-IPO market valuation, with a key perpetual contract falling 3.7%. This highlights how AI regulation is becoming a tradable event, as crypto-linked instruments allow rapid speculation on regulatory news. The incident underscores the integration of AI infrastructure into speculative markets, where valuations can react instantly to government actions, often faster than public evidence emerges.

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