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% | 90.0% | 1340elo | 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% | 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% | - | 66.0% | 74.2% | 69.4% |
| Claude Opus 4.6 Anthropic | 56.1% | 67.0% | 71.0% | 1223elo | 1804elo | 77.7 | 84.0% | 19.1% | 44.6% | 78.8% | 78.2% | 69.9% | 63.3% | 83.3% | 89.3% | 88.7% | 48.2% | 86.7% | 68.5% | 50.0% | 51.6% | 45.7% | 76.0% | 48.5% | 57.6% | 84.8% | 99.79 | 1.5 | - | - | 2.08 | - | - | - | 40.7% | - | - | - | 84.9% | 88771 | 58 | - | 78.5% | 93 | - | 44.5 | 72.0% | 75.6% | - | - | 80.6 | - | - | 66.5% |
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 | 66 tok/s | 0 tok/s |
| Latency | 49.62 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 Diamond84.0% (AA) Humanity's Last Exam (HLE)19.1% (AA) SciCode45.7% (AA) τ²-bench (Tau²-bench)84.8% (AA) Terminal-Bench (Hard)48.5% (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 84.0% 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.
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