US government blocks Anthropic's most powerful AI models over national security concernsExecutive summary: Anthropic announced it is disabling access to its two most advanced AI models, Claude 5 and Mythos 5, after a US government order that they be available only to American nationals on national security grounds. The move underscores escalating regulatory pressure on AI companies and raises questions about the feasibility of compliance with US directives, potentially affecting global AI development and market access. Anthropic, the U.S. administration under President Trump, and potentially U.S. citizens seeking access to the models. Anthropic may seek legal clarification or negotiate alternative compliance mechanisms, while policymakers may tighten restrictions on AI exports and usage.The United States has directed Anthropic to limit its flagship AI models, Claude 5 and Mythos 5, to domestic users citing national security, but Anthropic says the technical demand cannot be met, highlighting growing tension between AI firms and federal policy.Connected developmentsUS Justice Department clears Paramount‑Warner mergerAI firms consider stock market listingsPast French government interest in Anthropic's Mythos modelBitcoin and ethereum prices today, Friday, June 12, 2026: Prices rebound this morning after Trump claims war has endedOil prices plummet as Trump claims he is close to US-Iran dealSpaceX, OpenAI, Anthropic : à quoi leur sert-il d’entrer en Bourse ?Open the full case file on Beyond →
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