Gemini 3 Pro vs Grok 4 Turbo: which model should you choose?
We compared Gemini 3 Pro and Grok 4 Turbo on price, context window and 12 benchmarks. Grok 4 Turbo has the stronger average benchmark score; Gemini 3 Pro is cheaper on a blended 3:1 basis.
Gemini 3 Pro
Gemini 3 Pro is a frontier model from Google DeepMind. It offers a 2,000,000-token context window, costs $18.24 per million input tokens and $82.93 per million output tokens, and averages 86.1 across the index's benchmark suite.
- Input
- $18.24 / 1M
- Output
- $82.93 / 1M
- Context
- 2,000,000
- Avg score
- 86.1
- Open weights
- No
Grok 4 Turbo
Grok 4 Turbo is a frontier model from xAI. It offers a 1,000,000-token context window, costs $19.21 per million input tokens and $87.37 per million output tokens, and averages 86.7 across the index's benchmark suite.
- Input
- $19.21 / 1M
- Output
- $87.37 / 1M
- Context
- 1,000,000
- Avg score
- 86.7
- Open weights
- No
Specification comparison
| Spec | Gemini 3 Pro | Grok 4 Turbo | Edge |
|---|---|---|---|
| Input price / 1M | $18.24 | $19.21 | A |
| Output price / 1M | $82.93 | $87.37 | A |
| Context window | 2,000,000 | 1,000,000 | A |
| Max output | 8,192 | 65,536 | B |
| Average score | 86.1 | 86.7 | B |
| Arena Elo | 1460.7 | 1466.9 | B |
| Open weights | No | No | Tie |
Benchmark comparison
Gemini 3 Pro wins 3, Grok 4 Turbo wins 8, and 1 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Gemini 3 Pro | Grok 4 Turbo | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 88.2 | 86.1 | 2.1 | Gemini 3 Pro |
| GPQA Diamond | 79.0 | 84.5 | 5.5 | Grok 4 Turbo |
| SWE-bench Verified | 78.5 | 73.8 | 4.7 | Gemini 3 Pro |
| HumanEval | 91.8 | 92.9 | 1.1 | Grok 4 Turbo |
| MATH-500 | 89.9 | 92.1 | 2.2 | Grok 4 Turbo |
| AIME 2025 | 84.3 | 85.2 | 0.9 | Grok 4 Turbo |
| LiveCodeBench | 83.3 | 84.7 | 1.4 | Grok 4 Turbo |
| IFEval | 93.7 | 91.1 | 2.6 | Gemini 3 Pro |
| TruthfulQA | 88.8 | 88.8 | 0.0 | Tie |
| HellaSwag | 91.3 | 92.5 | 1.2 | Grok 4 Turbo |
| MMMU | 78.6 | 81.7 | 3.1 | Grok 4 Turbo |
| Arena Elo | 1460.7 | 1466.9 | 6.2 | Grok 4 Turbo |
Price analysis
On a blended 3:1 input-to-output basis, Gemini 3 Pro costs about $34.41 per million tokens and Grok 4 Turbo costs about $36.25. Gemini 3 Pro is roughly 5% cheaper than Grok 4 Turbo. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Gemini 3 Pro has the larger context window at 2,000,000 tokens, compared with 1,000,000 for Grok 4 Turbo. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Gemini 3 Pro wins 3, Grok 4 Turbo wins 8, and 1 are tied. On the index average, Grok 4 Turbo leads Gemini 3 Pro by 0.6 points (86.7 versus 86.1).
The price picture favours Gemini 3 Pro. The context picture favours Gemini 3 Pro. Those two dimensions often matter more than a few benchmark points once a model is good enough for the task.
If you need a single default, start with Grok 4 Turbo for quality-sensitive work and Gemini 3 Pro for high-volume, well-scoped tasks. Run both on a sample of your own traffic before locking in a choice.
Choose Gemini 3 Pro if
- Unit cost matters and you want the cheaper blended price.
- You need the larger 2,000,000-token context window.
Choose Grok 4 Turbo if
- You want the higher average benchmark score in this index.
- You need the larger 65,536-token output limit.
FAQ
Is Gemini 3 Pro better than Grok 4 Turbo?
On the index average, Grok 4 Turbo leads Gemini 3 Pro by 0.6 points (86.7 versus 86.1). The better choice depends on price, context and your task. Gemini 3 Pro wins 3 benchmarks, Grok 4 Turbo wins 8.
Which is cheaper, Gemini 3 Pro or Grok 4 Turbo?
Gemini 3 Pro is cheaper on a blended 3:1 basis at about $34.41 per million tokens, versus $36.25 for Grok 4 Turbo.
Which has the larger context window?
Gemini 3 Pro has the larger context window at 2,000,000 tokens. Grok 4 Turbo has 1,000,000 tokens.
Are these models open weights?
Gemini 3 Pro is proprietary; Grok 4 Turbo is proprietary.
Which should I choose for production?
If you need a single default, start with Grok 4 Turbo for quality-sensitive work and Gemini 3 Pro for high-volume, well-scoped tasks. Run both on a sample of your own traffic before locking in a choice.