Claude Fable 5 vs Gemini 3.1 Pro Preview
Head to head on 36 shared benchmarks, with price, context window, and release dates.
Benchmark scores
52evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Fable 5 Anthropic | 17.4% | 38.6% | 71.8% | 90.0% | 1340elo | 1933elo | 83 | 56.3% | 29.8% | 1932elo | 92.6% | 55.5% | 63.5% | 13.3% | 81.4% | 78.6% | 80.0% | 59.9% | 88.5% | 93.9% | 87.3% | 56.1% | 88.5% | 68.9% | 85.0% | 95.0% | 51.9% | 60.2% | 80.3% | 76.9% | 88.0% | 62.9% | 66.0% | 74.2% | 90.4% | 98.5% | - | 83.9% | - | - | - | 78.0% | 29.3% | - | - | - | - | 66.0% | - | - | - | - | 69.4% |
| Gemini 3.1 Pro Preview Google (Alphabet Inc.) | 12.3% | 26.5% | 64.5% | 22.0% | 1142elo | 1489elo | 68.2 | 43.0% | 16.7% | 1314elo | 94.1% | 47.0% | 77.1% | 0.0% | 82.4% | 76.5% | 78.5% | 79.1% | 85.4% | 91.0% | 84.0% | 59.1% | 76.1% | 69.4% | 76.2% | 26.0% | 48.7% | 58.9% | 54.2% | 72.9% | 70.7% | 53.8% | 41.9% | 56.1% | 32.0% | 95.6% | 76.8% | - | 2 | 73.1% | 22.8% | - | - | 36.9% | 42.5% | 93.2% | 15.1% | - | 84.4% | 86.3% | 72.7% | 79.4 | 58.9% |
2 / 2 models
| Attribute | Claude Fable 5 Anthropic | Gemini 3.1 Pro Preview Google (Alphabet Inc.) |
|---|---|---|
| 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. | Gemini 3.1 Pro Preview is an AI model from Google (Alphabet Inc.). |
| Family | Claude | Gemini |
| Params | - | - |
| Open weights | closed | - |
| License | - | - |
| Released | 9 Jun 2026 | 19 Feb 2026 |
| Context | 1,000,000 | 1,048,576 |
| Input $/1M | $10.00 | $2.00 |
| Output $/1M | $50.00 | $12.00 |
| Cache read $/1M | $1.000 | $0.200 |
| Cache write $/1M | $12.500 | $0.375 |
| Speed | 66 tok/s | 122 tok/s |
| Latency | 49.62 s | 20.68 s |
| Modalities | text, image, file | audio, file, image, text, video |
| Providers | - | - |
| Publisher | Anthropic | Google (Alphabet Inc.) |
| Reported scores | Finance Agent (v2)56.3% IFBench63.5% (AA) Swebenchpro80.3% LiveBench - Math93.9% (LiveBench) LiveBench - Coding78.6% (LiveBench) | GPQA Diamond94.1% (AA) Humanity's Last Exam (HLE)47.0% (AA) IFBench77.1% (AA) SciCode58.9% (AA) τ²-bench (Tau²-bench)95.6% (AA) |
FAQ
- Is Claude Fable 5 or Gemini 3.1 Pro Preview better?
- Across the 36 benchmarks both models report on Sophon, Claude Fable 5 leads on 30 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Fable 5 and Gemini 3.1 Pro Preview compare on GPQA Diamond?
- Claude Fable 5 scores 92.6% and Gemini 3.1 Pro Preview scores 94.1% on GPQA Diamond.
- Which is cheaper, Claude Fable 5 or Gemini 3.1 Pro Preview?
- Gemini 3.1 Pro Preview is cheaper at $12.00 per million output tokens against $50.00 for Claude Fable 5 - about 4.2x.
- When were Claude Fable 5 and Gemini 3.1 Pro Preview released?
- Claude Fable 5 was released 9 Jun 2026 by Anthropic. Gemini 3.1 Pro Preview was released 19 Feb 2026 by Google (Alphabet Inc.).
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