Claude Fable 5 vs Claude Opus 4.6
Head to head on 26 shared benchmarks, with price, context window, and release dates.
Benchmark scores
53evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5 Anthropic | 17.4% | 71.8% | 87.0% | 1340elo | 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% | 95.0% | 51.9% | 60.2% | 76.9% | 62.9% | 90.4% | 98.5% | - | - | 83.9% | 38.6% | - | 78.0% | 56.3% | 29.3% | - | 29.8% | 1932elo | 66.0% | - | - | - | 13.3% | - | - | 85.0% | - | - | - | 80.3% | 88.0% | - | 61.4% | 74.2% | 69.2% |
| Claude Opus 4.6 Anthropic | 56.1% | 67.0% | 69.0% | 1223elo | 1809elo | 77.7 | 89.6% | 39.9% | 53.1% | 78.8% | 78.2% | 69.9% | 63.3% | 83.3% | 89.3% | 88.7% | 48.2% | 86.7% | 68.5% | 50.0% | 51.6% | 51.9% | 76.0% | 46.2% | 57.6% | 92.1% | 99.79 | 1.5 | - | - | 2.08 | - | - | - | 40.7% | - | - | - | 84.9% | 88771 | 58 | - | 78.5% | 93 | - | 44.5 | 72.0% | 75.6% | - | - | 80.6 | - | - | 68.1% |
2 / 2 models
| Attribute | Claude Fable 5 Anthropic | Claude Opus 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 Opus 4.6 is an AI model from Anthropic. |
| Family | Claude | Claude |
| Params | - | - |
| Open weights | closed | closed |
| License | - | proprietary |
| Released | 9 Jun 2026 | 5 Feb 2026 |
| Context | 1,000,000 | 1,000,000 |
| Input $/1M | $10.00 | $5.00 |
| Output $/1M | $50.00 | $25.00 |
| Cache read $/1M | $1.000 | $0.500 |
| Cache write $/1M | $12.500 | $6.250 |
| 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) | GPQA Diamond89.6% (AA) Humanity's Last Exam (HLE)39.9% (AA) SciCode51.9% (AA) τ²-bench (Tau²-bench)92.1% (AA) Terminal-Bench (Hard)46.2% (AA) |
FAQ
- Is Claude Fable 5 or Claude Opus 4.6 better?
- Across the 26 benchmarks both models report on Sophon, Claude Fable 5 leads on 23 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Fable 5 and Claude Opus 4.6 compare on GPQA Diamond?
- Claude Fable 5 scores 92.6% and Claude Opus 4.6 scores 89.6% on GPQA Diamond.
- Which is cheaper, Claude Fable 5 or Claude Opus 4.6?
- Claude Opus 4.6 is cheaper at $25.00 per million output tokens against $50.00 for Claude Fable 5 - about 2.0x.
- When were Claude Fable 5 and Claude Opus 4.6 released?
- Claude Fable 5 was released 9 Jun 2026 by Anthropic. Claude Opus 4.6 was released 5 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 Opus 4.6 vs GPT-5.433 shared evalsClaude Opus 4.6 vs Gemini 3.1 Pro Preview31 shared evalsClaude Opus 4.6 vs Kimi K2.531 shared evalsClaude Opus 4.6 vs GPT-5.230 shared evalsClaude Opus 4.6 vs Claude Opus 4.729 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.528 shared evalsClaude Opus 4.6 vs GPT-5 Mini28 shared evalsClaude Opus 4.6 vs GPT-5.528 shared evalsClaude Opus 4.6 vs Claude Opus 4.828 shared evalsClaude Opus 4.5 vs Claude Opus 4.628 shared evalsClaude Fable 5 vs Claude Sonnet 4.628 shared evalsClaude Fable 5 vs Claude Opus 4.728 shared evalsClaude Opus 4.6 vs Claude Sonnet 4.628 shared evalsClaude Opus 4.6 vs GLM 5.127 shared evalsClaude Fable 5 vs GPT-5.426 shared evalsClaude Fable 5 vs Kimi K2.526 shared evalsClaude Opus 4.6 vs DeepSeek V3.226 shared evalsClaude Fable 5 vs GLM 5.125 shared evalsClaude Fable 5 vs GPT-5.4 Mini25 shared evalsClaude Opus 4.6 vs Grok 4.1 Fast25 shared evalsClaude Opus 4.6 vs GPT-5.4 Mini25 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 Opus 4.6 vs Qwen3.6 Plus24 shared evalsClaude Fable 5 vs GPT-5 Mini23 shared evalsClaude Opus 4.6 vs GPT-5 Nano23 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Fable 5 vs Grok 4.1 Fast23 shared evalsClaude 4 Sonnet vs Claude Fable 522 shared evalsClaude 4 Sonnet vs Claude Opus 4.622 shared evalsClaude Fable 5 vs GPT-5 Nano21 shared evalsClaude Opus 4.6 vs Gemini 2.5 Pro21 shared evalsClaude Opus 4.6 vs GLM 4.721 shared evalsClaude Fable 5 vs DeepSeek V3.220 shared evalsClaude Fable 5 vs GLM 4.720 shared evalsClaude Opus 4.6 vs GPT-519 shared evalsClaude Fable 5 vs Gemini 2.5 Pro19 shared evalsClaude Opus 4.6 vs gpt-oss-120b19 shared evalsClaude Fable 5 vs GPT-6 Astra18 shared evalsClaude Fable 5 vs gpt-oss-120b18 shared evalsClaude Fable 5 vs GPT-516 shared evalsClaude Opus 4.6 vs GPT-4o15 shared evalsClaude Opus 4.6 vs GPT-4.1 Mini13 shared evalsClaude Fable 5 vs GPT-4o13 shared evalsClaude Opus 4.6 vs GPT-4.113 shared evalsClaude Opus 4.6 vs GPT-6 Astra13 shared evalsClaude Fable 5 vs GPT-4o-mini12 shared evalsClaude Opus 4.6 vs GPT-4o-mini12 shared evalsClaude Opus 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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