Claude Sonnet 4.5 vs Gemini 3.1 Pro Preview
Head to head on 27 shared benchmarks, with price, context window, and release dates.
Benchmark scores
103evals · sort by any column, ⤢ to expand fullscreen
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| Gemini 3.1 Pro Preview Google (Alphabet Inc.) | 64.5% | 1489elo | 68.2 | 36.9% | 93.2% | 94.1% | 47.0% | 77.1% | 84.4% | 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% | 72.9% | 53.8% | 32.0% | 95.6% | - | - | - | - | - | 76.8% | - | - | 12.3% | - | 26.5% | - | 2 | - | - | 22.0% | 73.1% | 22.8% | - | - | 1142elo | - | - | 43.0% | 42.5% | - | 16.7% | 1314elo | - | 15.1% | - | - | - | - | - | - | 0.0% | - | - | - | - | - | - | 86.3% | - | - | - | - | - | - | - | - | - | - | - | - | - | 72.7% | - | - | - | - | - | - | 54.2% | - | - | - | - | 70.7% | 79.4 | - | 41.9% | 56.1% | - | - | 58.9% |
| Claude Sonnet 4.5 Anthropic | 60.8% | 1675elo | 71.4 | 15.2% | 83.9% | 72.7% | 7.2% | 42.7% | 83.8% | 70.7% | 80.4% | 57.0% | 53.4% | 76.5% | 79.3% | 77.6% | 40.6% | 84.5% | 64.0% | 62.9% | 19.0% | 32.9% | 42.8% | 73.3% | 28.8% | 22.6% | 70.5% | 0.0% | 0.0% | 37.0% | 100 | 0.0% | - | 0.0% | 0.0% | - | 5.0% | - | 0.0% | - | 0.0% | 0.0% | - | - | - | 0.0% | 0.0% | - | 0.0% | 0.0% | - | - | 0.0% | - | - | 0.0% | - | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 87.5% | - | 0.0% | 0.0% | 59.0% | 0.75 | 0.75 | 0.0% | - | 0 | 0 | 86.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | - | 0 | 0.0% | 0.0% | 77.2% | 67.0% | 74.8% | - | 0.0% | 0 | 0 | 50.34 | - | - | 0 | - | - | 0.0% | 1.49 | 27.5% |
2 / 2 models
| Attribute | Claude Sonnet 4.5 Anthropic | Gemini 3.1 Pro Preview Google (Alphabet Inc.) |
|---|---|---|
| Description | anthropic/claude-sonnet-4.5 is an AI model. | Gemini 3.1 Pro Preview is an AI model from Google (Alphabet Inc.). |
| Family | Claude | Gemini |
| Params | Undisclosed (closed) | - |
| Open weights | closed | - |
| License | Proprietary | - |
| Released | 29 Sep 2025 | 19 Feb 2026 |
| Context | 1,000,000 | 1,048,576 |
| Input $/1M | $3.00 | $2.00 |
| Output $/1M | $15.00 | $12.00 |
| Cache read $/1M | $0.300 | $0.200 |
| Cache write $/1M | $3.750 | $0.375 |
| Speed | 0 tok/s | 122 tok/s |
| Latency | 0.00 s | 20.68 s |
| Modalities | text, image, file | audio, file, image, text, video |
| Providers | anthropic, aws-bedrock, vertex-ai | - |
| Publisher | Anthropic | Google (Alphabet Inc.) |
| Reported scores | TaxEval v273.3% LiveBench - Math79.3% (LiveBench) LiveBench - Coding80.4% (LiveBench) LiveBench - Language76.5% (LiveBench) LiveBench - Data Analysis57.0% (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 Sonnet 4.5 or Gemini 3.1 Pro Preview better?
- Across the 27 benchmarks both models report on Sophon, Gemini 3.1 Pro Preview leads on 22 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Sonnet 4.5 and Gemini 3.1 Pro Preview compare on GPQA Diamond?
- Claude Sonnet 4.5 scores 72.7% and Gemini 3.1 Pro Preview scores 94.1% on GPQA Diamond.
- Which is cheaper, Claude Sonnet 4.5 or Gemini 3.1 Pro Preview?
- Gemini 3.1 Pro Preview is cheaper at $12.00 per million output tokens against $15.00 for Claude Sonnet 4.5 - about 1.3x.
- When were Claude Sonnet 4.5 and Gemini 3.1 Pro Preview released?
- Claude Sonnet 4.5 was released 29 Sep 2025 by Anthropic. Gemini 3.1 Pro Preview was released 19 Feb 2026 by Google (Alphabet Inc.).
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