Claude Fable 5.1
language modelAnthropic
Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual...
Key facts
| Made by | Anthropic |
|---|---|
| Type | language model |
| Released | September 1, 2026 |
| Reads at once | 1,000,000 tokens |
| Price (API, per million tokens) | $10 in · $50 out |
| Input → output | text, image, file → text |
Questions about Claude Fable 5.1
Who makes Claude Fable 5.1?
Claude Fable 5.1 is made by Anthropic.
When was Claude Fable 5.1 released?
We first saw Claude Fable 5.1 listed on September 1, 2026.
How much does Claude Fable 5.1 cost?
Through OpenRouter it costs $10 per million input tokens and $50 per million output tokens. Prices change, so check the provider before you build on it.
How much text can Claude Fable 5.1 read at once?
Up to 1,000,000 tokens, roughly 750K words.
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