The NSA has reportedly lost access to Anthropic’s advanced Mythos model amid a dispute between the tech company and Washington The US National Security Agency (NSA) has lost access to Anthropic’s advanced Mythos 5 AI model while using it to find software weaknesses, the New York Times has reported. The development comes amid Washington’s months-long dispute with the Silicon Valley firm. The cutoff came after the Trump administration imposed export restrictions on Anthropic earlier this month,