Computational Model Studio · Model release
Claude Fable 5.1
Demanding reasoning and long-horizon agentic work with text responses.
Developer: Anthropic · Last verified:
What it is designed to do
Demanding reasoning and long-horizon agentic work with text responses.
Documented uses: Demanding reasoning and long-horizon agentic work with text responses.
Access and deployment
- Claude Fable 5.1 Anthropic API — available. Provider account and API access under the publisher’s current service rules. Offering documentation Complete provider service terms were not reviewed for this offering.
- provider hosted: Use exact provider model ID claude-fable-5-1 with an eligible account and supported API endpoint. Limits: No local hardware requirement or weight-download claim is inferred from this API offering..
Technical profile and review notes
- Construction
- learned
- Representation
- neural
- Normalized architecture tags
- No normalized architecture tag assigned
- Lifecycle
- active
Inclusion rationale: The publisher recommends Fable for demanding reasoning when Opus at higher effort falls short, a material current choice for comparison.
Limitations
- The reviewed publisher source establishes the listed task and modalities, not independent accuracy or reliability measurements.
- Provider API access does not establish downloadable weights or local hardware feasibility.
Sources and related Studio records
Sources
Connections
- In areaComputational Models
- Supports functionGenerate text
- Supports functionAnswer visual questions
- OfferingClaude Fable 5.1 Anthropic API