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Claude Fable 5.1 (Adaptive Reasoning, High Effort, Default Fallback)
Anthropic · Released 2026-09-01 · Independent benchmark scores from Artificial Analysis
Intelligence Index
51.2
Output speed
53.0
tokens/sec
Blended price
$20.00
per 1M tokens
Time to first token
10.75s
Model metadata
| Model ID | 9d7d72cd-d95d-45a0-b109-4ad292c9aabd |
|---|---|
| Slug | claude-fable-5-1-high |
| Release date | 2026-09-01 |
| Provider | Anthropic |
| Provider slug | anthropic |
| Output speed | 53.0 tok/s |
| Time to first token | 10.75s |
| Time to first answer | 10.75s |
| Blended price ($/1M) | $20.00 |
| Input price ($/1M) | $10.00 |
| Output price ($/1M) | $50.00 |
All evaluation scores (17)
| aime | — |
|---|---|
| aime 25 | — |
| artificial analysis coding index | 79.10 |
| artificial analysis intelligence index | 51.20 |
| artificial analysis math index | — |
| gpqa | 90.6% |
| hle | 55.9% |
| ifbench | — |
| lcr | 83.7% |
| livecodebench | — |
| math 500 | — |
| mmlu pro | — |
| scicode | 58.7% |
| tau banking | 43.1% |
| tau2 | — |
| terminalbench hard | — |
| terminalbench v2 1 | 89.9% |
Source: artificialanalysis.ai/models/claude-fable-5-1-high
Benchmark data from Artificial Analysis.