The US government has issued an export control directive ordering Anthropic to suspend all access to Claude Fable 5 and Claude Mythos 5 for any foreign national — whether inside or outside the United States. To ensure compliance, Anthropic was forced to disable the models for every customer.

Card 1 — What happened: Anthropic received the Commerce Department directive at 5:21 PM ET on June 12, citing national security. The only path to full compliance: shut down Fable 5 and Mythos 5 for all users in all regions. AWS confirmed it revoked access across all regions at Anthropic's request. All other Claude models remain available.1

Card 2 — The government's case and Anthropic's rebuttal: The government told Anthropic it believes a "jailbreak" exists that bypasses Fable 5's safeguards to uncover software vulnerabilities. Anthropic says it received only verbal evidence of a "narrow, non-universal jailbreak" — a technique that finds minor, previously known bugs. Critically, Anthropic reviewed the government's report and says the same capability already exists in OpenAI's GPT-5.5 and is used daily by security defenders. Anthropic stands by its "defense in depth" strategy, which it says is more effective than any previously deployed model's safeguards.23

Card 3 — Why this matters beyond Anthropic: This is the first time a US export control has targeted an AI model itself rather than the chips and tools that build AI. Anthropic warned: "If this standard was applied across the industry, we believe it would essentially halt all new model deployments for all frontier model providers." The order arrives while Anthropic's IPO S-1 is live. The company says it will comply but believes this is a "misunderstanding" and is working to restore access as soon as possible. Pentagon CIO Kirsten Davies backed the order, saying: "Some things are simply more important than revenue cycles, clickbait, and pre-IPO valuation."1