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Anthropic: Claude Fable 5.1

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...

Developer
anthropic
Input modalities
text, image, file
Output modalities
text
Context tokens
1,000,000
Latest price observation
2026-09-27
Lowest paired standard token quote
$10.00 input / $50.00 output per 1M tokens

Dated price and provider records

Provider and channelInputOutput or native rateUnit and statusSource and observation
Automatic routingopenrouter$10.00$50.001M tokenspriced · USDopenrouter2026-09-27

These are dated, non-executable observations. Verify the exact endpoint, price and terms with the source before use. Unknown values are not free.