Claude Mythos 5 Articles
2 articles across AI Catchup's news, guides, tutorials, and comparisons.
All Claude Mythos 5 articles
AnthropicJun 13, 2026
Anthropic Suspended Fable 5 and Mythos 5 on June 12, 2026, and Restored Them on July 1: What Happened
A US export control directive forced Anthropic to disable Claude Fable 5 and Mythos 5 for all customers on June 12, 2026. The controls were lifted June 30 and Fable 5 returned globally July 1 with a new safety classifier. As of September 2026 both models are active, and Fable 5.1 is the current Fable model.
ClaudeJun 9, 2026
Claude Fable 5 and Mythos 5: Mythos-Class Capability Goes General, With Caveats
Anthropic launched Claude Fable 5 on June 9, 2026 as a Mythos-class model made safe for general use, plus Claude Mythos 5 for vetted cyberdefenders via Project Glasswing, both at $10 per million input and $50 per million output tokens. Fable 5.1 and Mythos 5.1 replaced them on September 1; Anthropic now lists Fable 5 as a legacy model.