Anthropic Restores Claude Mythos 5 Access for U.S. Cyber Defense Organizations

Anthropic has restored access to its cybersecurity model Claude Mythos 5 for a select group of U.S. organizations responsible for critical infrastructure following a temporary suspension and a two-week coordination with federal authorities; the company is working to expand access and re-enable Fable 5 in a phased, government-approved process, highlighting increased oversight of advanced AI tools used in cyber defense.