Claude Mythos Mythos is a class in the Claude family of LLMs by Anthropic. External links Claude Mythos - Anthropic Claude Fable - Anthropic Wikipedia Models ColumnsModelReleasedLifecycleContextPricingClaude Mythos 52026-06-09Active1M$10 / $50Claude Mythos Preview2026-04-07Retired1M—2 of 2 models