Anthropic
Claude Fable 5.1 API pricing
Claude Fable 5.1 is Anthropic’s model on the API market, released 1 Sept 2026. Prices are per million tokens in USD, as last read from the price list.
$10Input / 1M
$50Output / 1M
1MContext
128KMax output
Specification
USD per million tokens- Provider
- Anthropic
- Model id
anthropic/claude-fable-5.1- Input
- $10
- Output
- $50
- Cached input
- $0.25
- Context window
- 1M tokens
- Maximum output
- 128K tokens
- Takes
- text, image, file
- Returns
- text
- Tool use
- Yes
- Reasoning
- Yes
- Released
- 1 Sept 2026
- First tracked
- 17 Sept 2026
At $10 per million input tokens, Claude Fable 5.1 is dearer than 310 of the 326 models on the price list.
Price changes
Tracked since 17 Sept 2026No price change has been recorded since tracking began on 17 Sept 2026. Prices are checked every six hours, and any change is listed here and on model changes.
Other entries for this model
More from Anthropic
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- Claude Haiku 4.5$1.00 in · $5.00 out
- Claude Sonnet 5$2.00 in · $10 out
- Claude Sonnet 4.6$3.00 in · $15 out
- Claude Sonnet 4.5$3.00 in · $15 out
- Claude Sonnet 4$3.00 in · $15 out
- Claude Opus 5$5.00 in · $25 out
- Claude Opus 4.8$5.00 in · $25 out
Prices and specifications come from OpenRouter’s catalogue, last read 17 Sept 2026. A provider’s own price may differ; how this is collected.