Anthropic launches Claude Fable 5.1 and says it’s up to 45 percent cheaper for agentic work

Anthropic unveiled its latest AI models, Claude Fable 5.1 and Mythos 5.1, aimed at addressing customer concerns over cost, data retention, and strict safeguards. The company says Claude Fable 5.1 delivers stronger performance than its predecessor while being roughly 25 % cheaper on average and up to 45 % less expensive for complex agentic tasks, due to lower pricing on cached data.

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