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Claude Fable 5 (Adaptive Reasoning, Max Effort, Opus 4.8 Fallback)
Anthropic · Released 2026-06-09 · Independent benchmark scores from Artificial Analysis
Intelligence Index
64.9
Output speed
78.9
tokens/sec
Blended price
$20.00
per 1M tokens
Time to first token
82.56s
Model metadata
| Model ID | cd55210d-358e-4df1-ba9c-9acb5f186cc9 |
|---|---|
| Slug | claude-fable-5 |
| Release date | 2026-06-09 |
| Provider | Anthropic |
| Provider slug | anthropic |
| Output speed | 78.9 tok/s |
| Time to first token | 82.56s |
| Time to first answer | 82.56s |
| Blended price ($/1M) | $20.00 |
| Input price ($/1M) | $10.00 |
| Output price ($/1M) | $50.00 |
All evaluation scores (15)
| aime | — |
|---|---|
| aime 25 | — |
| artificial analysis coding index | 62.00 |
| artificial analysis intelligence index | 64.90 |
| artificial analysis math index | — |
| gpqa | 92.6% |
| hle | 53.3% |
| ifbench | 63.5% |
| lcr | 70.0% |
| livecodebench | — |
| math 500 | — |
| mmlu pro | — |
| scicode | 60.2% |
| tau2 | 98.5% |
| terminalbench hard | 62.9% |
Source: artificialanalysis.ai/models/claude-fable-5
Benchmark data from Artificial Analysis.