Claude Opus 4.5 vs Gemini 3.1 Pro Preview
Head to head on 28 shared benchmarks, with price, context window, and release dates.
Benchmark scores
61evals · sort by any column, ⤢ to expand fullscreen
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| Claude Opus 4.5 Anthropic | 61.3% | 35.6% | 6.1% | 1683elo | 73.1 | 20.7% | 84.7% | 81.0% | 13.2% | 43.0% | 83.5% | 78.1% | 79.7% | 74.4% | 62.5% | 81.3% | 90.4% | 80.1% | 45.2% | 83.2% | 68.7% | 36.0% | 45.0% | 47.0% | 74.3% | 40.9% | 20.6% | 86.3% | 62.7% | - | - | - | 16.7% | - | - | - | - | - | - | - | - | 12.13 | 83.8% | - | 73.8% | - | 88.9% | 100.0% | 37.4 | - | 77.5% | - | 45.3 | 70.7% | 79.2% | - | 61.8 | - | - | - | - | 62.2% |
| Gemini 3.1 Pro Preview Google (Alphabet Inc.) | 64.5% | 73.1% | 22.8% | 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% | 26.0% | 48.7% | 58.9% | 72.9% | 53.8% | 32.0% | 95.6% | - | 76.8% | 12.3% | 26.5% | - | 2 | 22.0% | 1142elo | 43.0% | 42.5% | 16.7% | 1314elo | 15.1% | - | - | 0.0% | - | 86.3% | - | - | - | 76.2% | - | 72.7% | - | - | - | 54.2% | - | 70.7% | 79.4 | 41.9% | 56.1% | 58.9% |
2 / 2 models
| Attribute | Claude Opus 4.5 Anthropic | Gemini 3.1 Pro Preview Google (Alphabet Inc.) |
|---|---|---|
| Description | Claude Opus 4.5 is an AI model from Anthropic. | Gemini 3.1 Pro Preview is an AI model from Google (Alphabet Inc.). |
| Family | Claude | Gemini |
| Params | - | - |
| Open weights | closed | - |
| License | proprietary | - |
| Released | 24 Nov 2025 | 19 Feb 2026 |
| Context | 200,000 | 1,048,576 |
| Input $/1M | $5.00 | $2.00 |
| Output $/1M | $25.00 | $12.00 |
| Cache read $/1M | $0.500 | $0.200 |
| Cache write $/1M | $6.250 | $0.375 |
| Speed | 0 tok/s | 122 tok/s |
| Latency | 0.00 s | 20.68 s |
| Modalities | file, image, text | audio, file, image, text, video |
| Providers | - | - |
| Publisher | Anthropic | Google (Alphabet Inc.) |
| Reported scores | 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 Opus 4.5 or Gemini 3.1 Pro Preview better?
- Across the 28 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 Opus 4.5 and Gemini 3.1 Pro Preview compare on GPQA Diamond?
- Claude Opus 4.5 scores 81.0% and Gemini 3.1 Pro Preview scores 94.1% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.5 or Gemini 3.1 Pro Preview?
- Gemini 3.1 Pro Preview is cheaper at $12.00 per million output tokens against $25.00 for Claude Opus 4.5 - about 2.1x.
- When were Claude Opus 4.5 and Gemini 3.1 Pro Preview released?
- Claude Opus 4.5 was released 24 Nov 2025 by Anthropic. Gemini 3.1 Pro Preview was released 19 Feb 2026 by Google (Alphabet Inc.).
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