Anthropic
Claude Fable 5.1
Claude model for demanding reasoning and long-horizon agentic work
anthropic/claude-fable-5-1
Context
1M
Output
128K
Released
2026-09-01
Knowledge cutoff
2026-06
Types
Reasoning
Tool use
Structured output
Attachments
Open weights
Provider pricing
- Price
- $10.00 / $50.00
- Context
- 1M
- Status
- Stable
- Price
- $10.00 / $50.00
- Context
- 1M
- Status
- Stable
- Price
- $10.00 / $50.00
- Context
- 1M
- Status
- Stable
- Price
- $10.00 / $50.00
- Context
- 1M
- Status
- Stable
- Price
- $10.00 / $50.00
- Context
- 1M
- Status
- Stable
- Price
- $10.00 / $50.00
- Context
- 1M
- Status
- Stable
- Price
- $10.00 / $50.00
- Context
- 1M
- Status
- Stable
Benchmarks
Terminal-Bench-Science
52.6 · score
Terminal-Bench
55.8 · score
GDPval-AA
1853 · Elo
OSWorld
77.9 · partial score
OSWorld
41.7 · strict success rate
Humanity's Last Exam
60.9 · score
Humanity's Last Exam
65 · score
AutomationBench
31.4 · pass rate
CursorBench
73.4 · score
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