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
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.5 Anthropic | 61.3% | 35.6% | 6.1% | 1687elo | 73.1 | 20.7% | 84.7% | 86.6% | 30.1% | 58.0% | 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% | 49.5% | 74.3% | 47.0% | 20.6% | 89.5% | 91.3% | - | - | - | 16.7% | - | - | - | - | - | - | - | - | 12.13 | 83.8% | - | 87.1% | - | 89.5% | 100.0% | 37.4 | - | 77.5% | - | 45.3 | 70.7% | 79.2% | - | 61.8 | - | - | - | - | 64.8% |
| Gemini 3.1 Pro Preview Google (Alphabet Inc.) | 64.5% | 73.1% | 22.8% | 1491elo | 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% | 58.7% | 72.9% | 53.8% | 32.0% | 95.6% | - | 76.8% | 12.3% | 26.5% | - | 2 | 20.0% | 1142elo | 43.0% | 42.5% | 16.7% | 1314elo | 15.1% | - | - | 0.0% | - | 86.3% | - | - | - | 76.2% | - | 72.7% | - | - | - | 54.2% | - | 70.7% | 79.4 | 33.4% | 56.1% | 58.7% |
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 | 123 tok/s |
| Latency | 0.00 s | 16.70 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) τ²-bench (Tau²-bench)95.6% (AA) Terminal-Bench (Hard)53.8% (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 86.6% 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.).
Other head-to-heads
56Gemini 3.1 Pro Preview vs GPT-5.541 shared evalsClaude Opus 4.8 vs Gemini 3.1 Pro Preview38 shared evalsClaude Fable 5 vs Gemini 3.1 Pro Preview36 shared evalsClaude Opus 4.5 vs GPT-5.235 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.534 shared evalsGemini 3.1 Pro Preview vs GPT-5.434 shared evalsClaude Sonnet 4.6 vs Gemini 3.1 Pro Preview32 shared evalsGemini 3.1 Pro Preview vs GLM 5.132 shared evalsClaude Opus 4.5 vs GPT-5 Mini31 shared evalsClaude Opus 4.6 vs Gemini 3.1 Pro Preview31 shared evalsClaude Opus 4.7 vs Gemini 3.1 Pro Preview31 shared evalsGemini 3.1 Pro Preview vs Kimi K2.530 shared evalsGemini 3.1 Pro Preview vs GPT-5.4 Mini30 shared evalsGemini 3.1 Pro Preview vs GPT-5.229 shared evalsClaude Opus 4.5 vs Grok 4.1 Fast29 shared evalsClaude Opus 4.5 vs Claude Opus 4.628 shared evalsClaude Opus 4.5 vs GPT-5.428 shared evalsClaude Sonnet 4.5 vs Gemini 3.1 Pro Preview27 shared evalsGemini 3.1 Pro Preview vs GPT-5 Mini27 shared evalsGemini 3.1 Pro Preview vs Qwen3.6 Plus27 shared evalsClaude Opus 4.5 vs DeepSeek V3.227 shared evalsClaude Opus 4.5 vs GPT-5 Nano26 shared evalsClaude 4 Sonnet vs Claude Opus 4.526 shared evalsClaude Opus 4.5 vs Kimi K2.526 shared evalsClaude Opus 4.5 vs GPT-5.525 shared evalsGemini 3.1 Pro Preview vs Grok 4.1 Fast25 shared evalsClaude Opus 4.5 vs GLM 4.725 shared evalsClaude Opus 4.5 vs GPT-5.4 Mini25 shared evalsDeepSeek V3.2 vs Gemini 3.1 Pro Preview24 shared evalsClaude Opus 4.5 vs Claude Opus 4.824 shared evalsClaude Opus 4.5 vs Claude Opus 4.724 shared evalsClaude Opus 4.5 vs Gemini 2.5 Pro24 shared evalsClaude Opus 4.5 vs GPT-523 shared evalsClaude 4 Sonnet vs Gemini 3.1 Pro Preview23 shared evalsClaude Fable 5 vs Claude Opus 4.523 shared evalsClaude Opus 4.5 vs Claude Sonnet 4.623 shared evalsClaude Opus 4.5 vs GLM 5.123 shared evalsGemini 3.1 Pro Preview vs GPT-5 Nano22 shared evalsClaude Opus 4.5 vs Qwen3.6 Plus22 shared evalsGemini 3.1 Pro Preview vs GLM 4.721 shared evalsClaude Opus 4.5 vs gpt-oss-120b21 shared evalsGemini 2.5 Pro vs Gemini 3.1 Pro Preview20 shared evalsGemini 3.1 Pro Preview vs GPT-519 shared evalsGemini 3.1 Pro Preview vs gpt-oss-120b18 shared evalsClaude Opus 4.5 vs GPT-4o18 shared evalsClaude Opus 4.5 vs GPT-4.1 Mini16 shared evalsGemini 3.1 Pro Preview vs GPT-6 Astra16 shared evalsClaude Opus 4.5 vs GPT-4.116 shared evalsClaude Opus 4.5 vs GPT-4o-mini15 shared evalsClaude Opus 4.5 vs GPT-4.1 Nano15 shared evalsGemini 3.1 Pro Preview vs GPT-4o14 shared evalsGemini 3.1 Pro Preview vs GPT-4.113 shared evalsGemini 3.1 Pro Preview vs GPT-4.1 Mini12 shared evalsGemini 3.1 Pro Preview vs GPT-4o-mini12 shared evalsGemini 3.1 Pro Preview vs GPT-4.1 Nano12 shared evalsClaude Opus 4.5 vs GPT-6 Astra11 shared evals
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