Gemini 3.1 Pro Preview vs Grok 4.1 Fast
Head to head on 25 shared benchmarks, with price, context window, and release dates.
Benchmark scores
55evals · sort by any column, ⤢ to expand fullscreen
| Model | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gemini 3.1 Pro Preview Google (Alphabet Inc.) | 64.5% | 1489elo | 68.2 | 94.1% | 47.0% | 77.1% | 84.4% | 82.4% | 76.5% | 78.5% | 79.1% | 85.4% | 91.0% | 84.0% | 86.3% | 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% | 73.1% | 22.8% | 1142elo | 43.0% | 36.9% | 42.5% | 16.7% | 1314elo | 93.2% | 15.1% | - | - | 0.0% | - | - | - | 76.2% | 72.7% | 54.2% | 70.7% | 79.4 | 41.9% | 56.1% | 58.9% |
| Grok 4.1 Fast xAI | 66.0% | 1324elo | 40.1 | 63.7% | 5.1% | 36.5% | 80.2% | 64.7% | 69.6% | 52.2% | 28.2% | 74.3% | 83.7% | 80.2% | 60.8% | 28.1% | 78.7% | 42.6% | 4.0% | 31.3% | 29.6% | 73.1% | 14.4% | 1.2% | 63.7% | 62.0% | 34.3% | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 11.8 | 35.0% | - | 39.9% | 100.0% | 74.3% | - | - | - | - | - | - | - | 51.0% |
2 / 2 models
| Attribute | Gemini 3.1 Pro Preview Google (Alphabet Inc.) | Grok 4.1 Fast xAI |
|---|---|---|
| Description | Gemini 3.1 Pro Preview is an AI model from Google (Alphabet Inc.). | Grok 4.1 Fast is an AI model from xAI. |
| Family | Gemini | Grok |
| Params | - | - |
| Open weights | - | closed |
| License | - | proprietary |
| Released | 19 Feb 2026 | 19 Nov 2025 |
| Context | 1,048,576 | - |
| Input $/1M | $2.00 | - |
| Output $/1M | $12.00 | - |
| Cache read $/1M | $0.200 | - |
| Cache write $/1M | $0.375 | - |
| Speed | 122 tok/s | 0 tok/s |
| Latency | 20.68 s | 0.00 s |
| Modalities | audio, file, image, text, video | text |
| Providers | - | - |
| Publisher | Google (Alphabet Inc.) | xAI |
| 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) | Infraresolutionbench80.2% (150 samples) Agent Diff Bench62.0% (179 samples) Medpt100.0% (15 samples) Hanabi11.8 (15 samples) SciCode29.6% (AA) |
FAQ
- Is Gemini 3.1 Pro Preview or Grok 4.1 Fast better?
- Across the 25 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 Gemini 3.1 Pro Preview and Grok 4.1 Fast compare on GPQA Diamond?
- Gemini 3.1 Pro Preview scores 94.1% and Grok 4.1 Fast scores 63.7% on GPQA Diamond.
- When were Gemini 3.1 Pro Preview and Grok 4.1 Fast released?
- Gemini 3.1 Pro Preview was released 19 Feb 2026 by Google (Alphabet Inc.). Grok 4.1 Fast was released 19 Nov 2025 by xAI.
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