Claude 4 Sonnet vs Claude Fable 5
Head to head on 22 shared benchmarks, with price, context window, and release dates.
Benchmark scores
58evals · sort by any column, ⤢ to expand fullscreen
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| Claude Fable 5 Anthropic | 71.8% | 1933elo | 83 | 92.6% | 55.5% | 63.5% | 81.4% | 78.6% | 80.0% | 59.9% | 88.5% | 93.9% | 87.3% | 56.1% | 88.5% | 68.9% | 85.0% | 51.9% | 60.2% | 76.9% | 62.9% | 98.5% | - | - | 17.4% | - | 83.9% | 38.6% | - | 90.0% | - | 1340elo | 78.0% | 56.3% | 29.3% | 29.8% | 1932elo | - | 66.0% | 13.3% | - | - | - | - | 95.0% | - | - | - | - | - | 80.3% | 88.0% | - | 66.0% | 74.2% | 90.4% | - | - | 69.4% |
| Claude 4 Sonnet Anthropic | 54.7% | 1480elo | 58.4 | 68.3% | 4.3% | 45.4% | 64.8% | 77.5% | 54.6% | 44.3% | 72.9% | 70.5% | 69.0% | 33.9% | 72.4% | 62.5% | 43.9% | 35.0% | 37.3% | 69.6% | 27.3% | 52.3% | 40.7% | 38.0% | - | 22.9% | - | - | 47.8% | - | 19.8% | - | - | - | - | - | - | 67.5% | - | - | 44.9% | 93.4% | 86.7% | 83.7% | - | 6.18 | 6.18 | 58.3% | 35.6% | 74.6% | - | - | 0.59 | - | - | - | 84.0% | 84.0% | 55.5% |
2 / 2 models
| Attribute | Claude 4 Sonnet Anthropic | Claude Fable 5 Anthropic |
|---|---|---|
| Description | Claude 4 Sonnet is an AI model from Anthropic. | Claude Fable 5 is Anthropic's most capable widely released model, built for the most demanding reasoning and long-horizon agentic work. Shares its base model with the invitation-only Claude Mythos 5. |
| Family | Claude | Claude |
| Params | - | - |
| Open weights | closed | closed |
| License | proprietary | - |
| Released | 22 May 2025 | 9 Jun 2026 |
| Context | 200,000 | 1,000,000 |
| Input $/1M | $3.00 | $10.00 |
| Output $/1M | $15.00 | $50.00 |
| Cache read $/1M | - | $1.000 |
| Cache write $/1M | - | $12.500 |
| Speed | 0 tok/s | 66 tok/s |
| Latency | 0.00 s | 49.62 s |
| Modalities | text, image | text, image, file |
| Providers | - | - |
| Publisher | Anthropic | Anthropic |
| Reported scores | Finance Agent (v2)56.3% IFBench63.5% (AA) Swebenchpro80.3% LiveBench - Math93.9% (LiveBench) LiveBench - Coding78.6% (LiveBench) |
FAQ
- Is Claude 4 Sonnet or Claude Fable 5 better?
- Across the 22 benchmarks both models report on Sophon, Claude Fable 5 leads on 22 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude 4 Sonnet and Claude Fable 5 compare on GPQA Diamond?
- Claude 4 Sonnet scores 68.3% and Claude Fable 5 scores 92.6% on GPQA Diamond.
- Which is cheaper, Claude 4 Sonnet or Claude Fable 5?
- Claude 4 Sonnet is cheaper at $15.00 per million output tokens against $50.00 for Claude Fable 5 - about 3.3x.
- When were Claude 4 Sonnet and Claude Fable 5 released?
- Claude 4 Sonnet was released 22 May 2025 by Anthropic. Claude Fable 5 was released 9 Jun 2026 by Anthropic.
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