U.S. Anthropic revealed on its official X account that it had received notice from the U.S. government allowing access to its AI model “Claude Mythos 5” to resume, limited to select U.S. organizations that operate and defend critical infrastructure, as of June 26 (local time). “Claude Fable 5” is not included. Mythos 5, which the company describes as its “most powerful cybersecurity model,” is set to partially resume following the blanket suspension impose