The US government has ordered AI company Anthropic to restrict access to its most advanced AI models for non-American entities. This includes foreign governments, businesses, and individuals, effectively blocking their use of models like Mythos. Anthropic has complied by disabling access to models Fable 5 and Mythos 5 for all users, not just those outside the US, according to founder Dario Amodei. The decision, made under the Trump administration, stems from concerns that security measures protecting the AI could be circumvented. US officials view the powerful AI, considered capable of “superhacking” and large-scale cyberattacks, as critical to national security and want to prevent its access by potential adversaries. This action follows previous disagreements between Anthropic and the US government regarding the military application of AI, particularly the company’s opposition to developing autonomous weapons systems. The move represents a new escalation in tensions between Anthropic and Washington.