Claude Fable 5.1
unknownAnthropic · claude-fable family
Claude model for demanding reasoning and long-horizon agentic work
Limits
Context1,000,000
InputUnknown
Output128,000
Modalities
Inputtext, image, pdf
Outputtext
Release info
Release2026-09-01
Last update2026-09-01
Knowledge cutoff2026-06
Provider offerings
Provider-specific prices and limits stay separate from canonical model facts.
| Provider | Provider model ID | Input | Output | Context | Output limit |
|---|---|---|---|---|---|
| No visible provider offerings yet. | |||||
Capabilities
Attachments
Yes
Reasoning
Yes
Tool calling
Yes
Structured output
Unknown
Temperature
No