Anthropic prices Claude Fable 5.1 cache reads
Cache-read price for Claude Fable 5.1 and Claude Mythos 5.1 is $0.25 per million tokens, 0.025 times base input, versus 0.1 times on other models. Cache write prices are unchanged.
Models: Claude Fable 5.1
Source: Claude Developer Platform release notes, checked Sep 28, 2026. Summarized from the provider’s announcement.