The Fable 5 Shutdown: A Case Study in AI Access, Privacy, and Export Controls

On June 9, 2026, Anthropic released Claude Fable 5 to the public as a safeguarded version of its more restricted Mythos-class system. Just days later, on June 12, 2026, the U.S. government issued a legally binding export-control directive that forced Anthropic to suspend access to Fable 5 and Mythos 5.