OpenRouter
Catalog quote- Input
- $5.00
- Output
- $25.00
- Cached input
- $0.125
anthropicListed Sep 1, 2026
Anthropic: Claude Fable 5.1 (batch)
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...
Context window1M
Max output128K
Provider endpoints2
Benchmark results0
Measured performance
All leaderboards ↗Benchmark results
No published results in this index yet
Scores appear here when an evaluation matches this exact model.
Access & cost
2 quotesPrices across providers
- Input
- $5.00
- Output
- $25.00
- Cached input
- $0.125
Cache write $6.25/M tokens · 1h cache write $10/M tokens · Web search $0.01/search
Model specifications
- Developer
- anthropic
- Modality
- Language
- Context
- 1,000,000 tokens
- Maximum output
- 128,000 tokens
- Weights
- Not reported
- Provider listed
- Sep 1, 2026
- First discovered
- Oct 16, 2026
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View all ↗anthropicListed 10 days ago
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anthropicListed 10 days ago
Anthropic: Claude Haiku 5.5 (batch)
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anthropicListed 19 days ago
Anthropic: Claude Sonnet 5.5 (batch)
Claude Sonnet 5.5 is Anthropic's Sonnet-class model for well-scoped everyday work, succeeding Claude Sonnet 5 as a direct upgrade. It is especially strong at building features, fixing bugs, and producing...
1M contextImage inputTool callingNo reported score
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anthropicReleased 20 days ago
Anthropic: Claude Sonnet 5.5
Tuned for quick iteration on scoped fixes and documents; Anthropic favors Opus 5.5 for open-ended work needing sustained judgment.
1M contextImage inputTool calling