Anthropic Launches Claude 5 — Then Immediately Blocks Its Most Powerful Version
Claude Fable 5 went generally available on June 9, 2026. Three days later, Anthropic was forced to disable Claude Mythos 5 — its most capable model ever — following a directive from the U.S. Department of Commerce.
The Mythos 5 shutdown is unlike anything that has happened in commercial AI before.…