Claude Fable 5.1 price and availability: Everything you need to know
Anthropic released Claude Fable 5.1 on Tuesday, September 1, its top AI model for long, complex work like coding, research, computer use, and office work.
Claude Fable 5.1 is Anthropic's most capable AI model for long, complex tasks that require minimal supervision, replacing the previous Claude Fable 5 and ranking above Opus 5 and Sonnet 5 in the company's lineup. The model is designed to handle tasks that involve planning, reasoning, and multiple steps, with the ability to repeat actions as needed.
Released on September 1, 2026, Fable 5.1 is accessible through Anthropic's API, partner platforms, and integrated into various applications such as Claude's web interface, mobile and desktop apps, Claude Code, Cowork, and Microsoft 365. US users face a 1.1 times price increase for standard input and output rates, while batch processing offers a 50% cost reduction.
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