Claude Opus 4.8 vs Gemini 3.1 Pro Preview
Head to head on 38 shared benchmarks, with price, context window, and release dates.
Benchmark scores
52evals · sort by any column, ⤢ to expand fullscreen
| Model | |||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claude Opus 4.8 Anthropic | 15.5% | 14.5% | 66.7% | 67.0% | 1281elo | 1835elo | 80.8 | 53.9% | 47.2% | 22.5% | 1890elo | 92.0% | 48.7% | 62.2% | 10.4% | 80.1% | 79.3% | 78.3% | 67.4% | 81.4% | 84.3% | 89.7% | 91.8% | 53.2% | 85.8% | 69.9% | 83.4% | 69.0% | 54.8% | 53.5% | 69.2% | 75.6% | 82.7% | 58.3% | 60.9% | 70.9% | 82.7% | 94.4% | - | 80.4% | - | - | - | 40.0% | 13.4% | - | - | - | 56.9% | - | - | - | 63.4% |
| Gemini 3.1 Pro Preview Google (Alphabet Inc.) | 12.3% | 26.5% | 64.5% | 22.0% | 1142elo | 1489elo | 68.2 | 43.0% | 36.9% | 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% | 86.3% | 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% | - | - | 42.5% | 93.2% | 15.1% | - | 84.4% | 72.7% | 79.4 | 58.9% |
2 / 2 models
| Attribute | Claude Opus 4.8 Anthropic | Gemini 3.1 Pro Preview Google (Alphabet Inc.) |
|---|---|---|
| Description | Claude Opus 4.8 (Adaptive Reasoning, Max Effort) 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 | - | - |
| License | - | - |
| Released | 28 May 2026 | 19 Feb 2026 |
| Context | 1,000,000 | 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 | text, image, file | 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 4.8 or Gemini 3.1 Pro Preview better?
- Across the 38 benchmarks both models report on Sophon, Claude Opus 4.8 leads on 27 of them. Which one is "better" depends on the benchmark - the table above shows every shared score.
- How do Claude Opus 4.8 and Gemini 3.1 Pro Preview compare on GPQA Diamond?
- Claude Opus 4.8 scores 92.0% and Gemini 3.1 Pro Preview scores 94.1% on GPQA Diamond.
- Which is cheaper, Claude Opus 4.8 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 4.8 - about 2.1x.
- When were Claude Opus 4.8 and Gemini 3.1 Pro Preview released?
- Claude Opus 4.8 was released 28 May 2026 by Anthropic. Gemini 3.1 Pro Preview was released 19 Feb 2026 by Google (Alphabet Inc.).
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