Claude Fable 5.1
by Kilo Gateway · family claude-fable · listed Sep 2026RTV
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...
Current rates USD per 1M tokens
Input$10.00
Output$50.00
Cache read$0.25
Cache write$12.50
Against the market
On the record
- Model id
anthropic/claude-fable-5.1- Context window
- 1M tokens
- Max output
- 128K tokens
- Input modalities
- text, image, pdf
- Output modalities
- text
- Reasoning
- yes
- Tool calls
- yes
- Open weights
- no
- Knowledge cutoff
- Jun 2026
- Released
- 2026-09-01
- Last updated
- 2026-09-01
- Provider docs
- kilo.ai
Back of the envelope
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