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
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5 Anthropic | 71.8% | 1943elo | 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% | - | 87.0% | - | 1340elo | 78.0% | 56.3% | 29.3% | 29.8% | 1932elo | - | 66.0% | 13.3% | - | - | - | - | 95.0% | - | - | - | - | - | 80.3% | 88.0% | - | 61.4% | 74.2% | 90.4% | - | - | 69.2% |
| Claude 4 Sonnet Anthropic | 54.7% | 1483elo | 58.4 | 77.7% | 10.7% | 54.7% | 64.8% | 77.5% | 54.6% | 44.3% | 72.9% | 70.5% | 69.0% | 33.9% | 72.4% | 62.5% | 43.9% | 35.0% | 40.0% | 69.6% | 31.1% | 64.6% | 77.3% | 74.3% | - | 22.9% | - | - | 47.8% | - | 19.8% | - | - | - | - | - | - | 67.5% | - | - | 65.5% | 99.1% | 86.7% | 84.2% | - | 6.18 | 6.18 | 58.3% | 35.6% | 74.6% | - | - | 0.59 | - | - | - | 84.0% | 84.0% | 59.6% |
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 | - | $10.00 |
| Output $/1M | - | $50.00 |
| Cache read $/1M | - | $1.000 |
| Cache write $/1M | - | $12.500 |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 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 77.7% and Claude Fable 5 scores 92.6% on GPQA Diamond.
- 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.
Other head-to-heads
56Claude Fable 5 vs Claude Opus 4.840 shared evalsClaude Fable 5 vs GPT-5.539 shared evalsClaude Fable 5 vs Gemini 3.1 Pro Preview36 shared evalsClaude 4 Sonnet vs GPT-5 Mini29 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.528 shared evalsClaude Fable 5 vs Claude Sonnet 4.628 shared evalsClaude Fable 5 vs Claude Opus 4.728 shared evalsClaude 4 Sonnet vs Claude Opus 4.526 shared evalsClaude Fable 5 vs Claude Opus 4.626 shared evalsClaude Fable 5 vs GPT-5.426 shared evalsClaude Fable 5 vs Kimi K2.526 shared evalsClaude 4 Sonnet vs GPT-525 shared evalsClaude 4 Sonnet vs GPT-5 Nano25 shared evalsClaude 4 Sonnet vs GPT-5.225 shared evalsClaude Fable 5 vs GLM 5.125 shared evalsClaude Fable 5 vs GPT-5.4 Mini25 shared evalsClaude 4 Sonnet vs Gemini 2.5 Pro25 shared evalsClaude Fable 5 vs Claude Sonnet 4.524 shared evalsClaude Fable 5 vs GPT-5.224 shared evalsClaude Fable 5 vs Qwen3.6 Plus24 shared evalsClaude 4 Sonnet vs Grok 4.1 Fast24 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude 4 Sonnet vs GPT-5.523 shared evalsClaude 4 Sonnet vs Gemini 3.1 Pro Preview23 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsClaude 4 Sonnet vs Kimi K2.523 shared evalsClaude 4 Sonnet vs Claude Opus 4.822 shared evalsClaude 4 Sonnet vs Claude Opus 4.622 shared evalsClaude 4 Sonnet vs GPT-5.422 shared evalsClaude 4 Sonnet vs GLM 4.722 shared evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsClaude 4 Sonnet vs Claude Opus 4.721 shared evalsClaude 4 Sonnet vs DeepSeek V3.221 shared evalsClaude 4 Sonnet vs gpt-oss-120b21 shared evalsClaude Fable 5 vs DeepSeek V3.220 shared evalsClaude Fable 5 vs GLM 4.720 shared evalsClaude 4 Sonnet vs Claude Sonnet 4.620 shared evalsClaude 4 Sonnet vs GLM 5.120 shared evalsClaude 4 Sonnet vs GPT-4o20 shared evalsClaude 4 Sonnet vs GPT-4.1 Mini19 shared evalsClaude Fable 5 vs Gemini 2.5 Pro19 shared evalsClaude 4 Sonnet vs GPT-4.119 shared evalsClaude 4 Sonnet vs Qwen3.6 Plus19 shared evalsClaude 4 Sonnet vs GPT-5.4 Mini19 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsClaude 4 Sonnet vs GPT-4o-mini18 shared evalsClaude Fable 5 vs GPT-516 shared evalsClaude 4 Sonnet vs GPT-4.1 Nano16 shared evalsClaude Fable 5 vs GPT-4o13 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsClaude Fable 5 vs GPT-4.1 Nano11 shared evalsClaude Fable 5 vs GPT-4.1 Mini10 shared evalsClaude Fable 5 vs GPT-4.110 shared evalsClaude 4 Sonnet vs GPT-6 Astra8 shared evals
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