Anthropic Launches Claude Fable 5.1, 45% Cheaper for Agentic Work
Anthropic’s new Claude Fable 5.1 model promises better performance and up to 45% lower pricing for agentic workloads.

Anthropic announced the rollout of its latest AI models, Claude Fable 5.1 and Mythos 5.1, in response to customer feedback on pricing, data retention, and safety controls.
According to the company, Claude Fable 5.1 delivers stronger performance than the previous Fable 5 iteration while typically costing about 25 % less. For more demanding, agentic tasks the price reduction can reach up to 45 %.
The pricing adjustments are positioned as a direct answer to client concerns about the expense of running complex AI agents, as well as the perceived over‑reach of existing safeguards.
Anthropic highlighted that the new models maintain the same level of data‑privacy protections, aiming to balance cost efficiency with responsible AI usage.
The announcement was reported by The Verge AI on September 1, 2026.
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