Trump administration lifts restrictions on Anthropic’s Claude models after cybersecurity alarm

The Trump administration has lifted restrictions on Anthropic's Claude Fable 5 and Mythos 5 AI models after cybersecurity concerns raised by Amazon's researchers. Anthropic now offers Fable 5 widely and limited access to Mythos 5 for approved U.S. organizations, while OpenAI restricts its new GPT-5.6 Sol model at the administration's request.