Claude Fable 5 vs Claude Sonnet 4.6
Head to head on 28 shared benchmarks, with price, context window, and release dates.
Benchmark scores
47evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5 Anthropic | 17.4% | 71.8% | 87.0% | 1340elo | 1943elo | 83 | 56.3% | 92.6% | 55.5% | 63.5% | 81.4% | 78.6% | 80.0% | 59.9% | 88.5% | 93.9% | 87.3% | 68.9% | 85.0% | 95.0% | 51.9% | 60.2% | 76.9% | 62.9% | 61.4% | 74.2% | 90.4% | 98.5% | - | - | 83.9% | 38.6% | - | 78.0% | 29.3% | - | 29.8% | 1932elo | 66.0% | - | 13.3% | 56.1% | 88.5% | - | 80.3% | 88.0% | - | 69.2% |
| Claude Sonnet 4.6 Anthropic | 47.6% | 65.3% | 76.0% | 1207elo | 1810elo | 79.9 | 51.0% | 87.5% | 33.6% | 56.6% | 78.4% | 80.0% | 76.1% | 63.9% | 77.7% | 86.5% | 86.4% | 67.7% | 72.1% | 45.0% | 46.6% | 50.1% | 77.1% | 53.0% | 50.6% | 60.6% | 51.5% | 75.7% | 87.1% | 47.2% | - | - | 1.35 | - | - | 32.4% | - | - | - | 92.2% | - | - | - | 89.3 | - | - | 76.3 | 64.7% |
2 / 2 models
| Attribute | Claude Fable 5 Anthropic | Claude Sonnet 4.6 Anthropic |
|---|---|---|
| Description | 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. | Claude Sonnet 4.6 is an AI model from Anthropic. |
| Family | Claude | Claude |
| Params | - | - |
| Open weights | closed | closed |
| License | - | proprietary |
| Released | 9 Jun 2026 | 17 Feb 2026 |
| Context | 1,000,000 | 1,000,000 |
| Input $/1M | $10.00 | $3.00 |
| Output $/1M | $50.00 | $15.00 |
| Cache read $/1M | $1.000 | $0.300 |
| Cache write $/1M | $12.500 | $3.750 |
| Speed | 0 tok/s | 0 tok/s |
| Latency | 0.00 s | 0.00 s |
| Modalities | text, image, file | 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 Fable 5 or Claude Sonnet 4.6 better?
- Across the 28 benchmarks both models report on Sophon, Claude Fable 5 leads on 24 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Fable 5 and Claude Sonnet 4.6 compare on GPQA Diamond?
- Claude Fable 5 scores 92.6% and Claude Sonnet 4.6 scores 87.5% on GPQA Diamond.
- Which is cheaper, Claude Fable 5 or Claude Sonnet 4.6?
- Claude Sonnet 4.6 is cheaper at $15.00 per million output tokens against $50.00 for Claude Fable 5 - about 3.3x.
- When were Claude Fable 5 and Claude Sonnet 4.6 released?
- Claude Fable 5 was released 9 Jun 2026 by Anthropic. Claude Sonnet 4.6 was released 17 Feb 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 Sonnet 4.6 vs Gemini 3.1 Pro Preview32 shared evalsClaude Sonnet 4.6 vs GPT-5.530 shared evalsClaude Opus 4.8 vs Claude Sonnet 4.629 shared evalsClaude Opus 4.7 vs Claude Sonnet 4.629 shared evalsClaude Fable 5 vs Claude Opus 4.728 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.628 shared evalsClaude Sonnet 4.6 vs GPT-5.428 shared evalsClaude Sonnet 4.6 vs GPT-5.4 Mini28 shared evalsClaude Sonnet 4.6 vs Kimi K2.527 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 Sonnet 4.6 vs Qwen3.6 Plus26 shared evalsClaude Fable 5 vs GLM 5.125 shared evalsClaude Fable 5 vs GPT-5.4 Mini25 shared evalsClaude Sonnet 4.6 vs GLM 5.125 shared evalsClaude Fable 5 vs Claude Sonnet 4.524 shared evalsClaude Sonnet 4.5 vs Claude Sonnet 4.624 shared evalsClaude Fable 5 vs GPT-5.224 shared evalsClaude Sonnet 4.6 vs GPT-5.224 shared evalsClaude Fable 5 vs Qwen3.6 Plus24 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude Sonnet 4.6 vs GPT-5 Mini23 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.623 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsClaude Sonnet 4.6 vs DeepSeek V3.223 shared evalsClaude 4 Sonnet vs Claude Fable 522 shared evalsClaude Sonnet 4.6 vs Grok 4.1 Fast22 shared evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsClaude Sonnet 4.6 vs GPT-5 Nano20 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 Fable 5 vs Gemini 2.5 Pro19 shared evalsClaude Sonnet 4.6 vs Gemini 2.5 Pro19 shared evalsClaude Sonnet 4.6 vs GLM 4.719 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsClaude Sonnet 4.6 vs gpt-oss-120b18 shared evalsClaude Fable 5 vs GPT-516 shared evalsClaude Sonnet 4.6 vs GPT-516 shared evalsClaude Sonnet 4.6 vs GPT-4o14 shared evalsClaude Fable 5 vs GPT-4o13 shared evalsClaude Sonnet 4.6 vs GPT-6 Astra13 shared evalsClaude Sonnet 4.6 vs GPT-4.1 Mini12 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsClaude Sonnet 4.6 vs GPT-4.112 shared evalsClaude Sonnet 4.6 vs GPT-4o-mini12 shared evalsClaude Sonnet 4.6 vs GPT-4.1 Nano12 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 evals
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