Anthropic Releases Claude Fable 5.1 and Cuts Cached Token Pricing by 75%

Anthropic has launched Claude Fable 5.1 , its latest flagship model, which is now available through the API, cloud platforms, and the Claude desktop app. The company also introduced Mythos 5.1, a version of the same model set aside for approved cybersecurity and life-sciences organizations. Both models are aimed at tasks that take hours to complete, not just sec onds.