Claude Fable 5.1 API
by Anthropic
Anthropic's Claude Fable 5.1 — for demanding reasoning and long-horizon agentic work, with stronger long-running agentic coding, multistep research, and document, spreadsheet and slide work across a 1M-token context.
Claude Fable 5.1 is launching on you.bot soon — one API, one credit balance, pay only for successful calls. Create a free account to get your API key ready and be first to use it when it goes live.
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