Anthropic's Claude Fable 5.1 Cuts Agentic Costs 45%

Anthropic has launched Claude Fable 5.1 and Mythos 5.1, directly responding to customer complaints about pricing, data retention, and overly cautious safeguards. The company claims Fable 5.1 outperforms its predecessor while costing roughly 25 percent less on average and up to 45 percent less for complex agentic tasks, with savings driven by reduced pricing on cached, previously processed data.