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Claude Fable 5.1 (Adaptive Reasoning, Xhigh Effort, Default Fallback)
Anthropic · Released 2026-09-01 · Independent benchmark scores from Artificial Analysis
Intelligence Index
53.2
Output speed
61.3
tokens/sec
Blended price
$20.00
per 1M tokens
Time to first token
44.48s
Model metadata
| Model ID | 9b166bf3-42db-4f63-8338-1c4a1244ffe8 |
|---|---|
| Slug | claude-fable-5-1-xhigh |
| Release date | 2026-09-01 |
| Provider | Anthropic |
| Provider slug | anthropic |
| Output speed | 61.3 tok/s |
| Time to first token | 44.48s |
| Time to first answer | 44.48s |
| Blended price ($/1M) | $20.00 |
| Input price ($/1M) | $10.00 |
| Output price ($/1M) | $50.00 |
All evaluation scores (17)
| aime | — |
|---|---|
| aime 25 | — |
| artificial analysis coding index | 80.70 |
| artificial analysis intelligence index | 53.20 |
| artificial analysis math index | — |
| gpqa | 93.4% |
| hle | 58.7% |
| ifbench | — |
| lcr | 83.0% |
| livecodebench | — |
| math 500 | — |
| mmlu pro | — |
| scicode | 60.9% |
| tau banking | 45.8% |
| tau2 | — |
| terminalbench hard | — |
| terminalbench v2 1 | 91.0% |
Source: artificialanalysis.ai/models/claude-fable-5-1-xhigh
Benchmark data from Artificial Analysis.