AI News & TrendsUS bans Anthropic's Fable 5, Mythos 5 models for export control
In June 2026, the US government treated advanced AI models as controlled munitions, which may have changed how people can use frontier AI systems. Anthropic had to quickly disable its Fable 5 and Mythos 5 models for all users, and only a small group later regained access to Mythos 5. OpenAI faced different rules, needing to let government reviewers check new models before wider release. It appears companies now have to plan for sudden restrictions and follow strict rules about user nationality and model access. These new export controls may freeze or slow down AI model access and have resulted in ongoing negotiations and uncertainty for both companies and researchers.













