Gemini 2.5 Pro Pro vs Grok 3 Max: which model should you choose?
We compared Gemini 2.5 Pro Pro and Grok 3 Max on price, context window and 12 benchmarks. Grok 3 Max has the stronger average benchmark score; Grok 3 Max is cheaper on a blended 3:1 basis.
Gemini 2.5 Pro Pro
Gemini 2.5 Pro Pro is a frontier model from Google DeepMind. It offers a 400,000-token context window, costs $17.16 per million input tokens and $90.89 per million output tokens, and averages 83.6 across the index's benchmark suite.
- Input
- $17.16 / 1M
- Output
- $90.89 / 1M
- Context
- 400,000
- Avg score
- 83.6
- Open weights
- No
Grok 3 Max
Grok 3 Max is a frontier model from xAI. It offers a 2,000,000-token context window, costs $17.66 per million input tokens and $89.12 per million output tokens, and averages 85.9 across the index's benchmark suite.
- Input
- $17.66 / 1M
- Output
- $89.12 / 1M
- Context
- 2,000,000
- Avg score
- 85.9
- Open weights
- No
Specification comparison
| Spec | Gemini 2.5 Pro Pro | Grok 3 Max | Edge |
|---|---|---|---|
| Input price / 1M | $17.16 | $17.66 | A |
| Output price / 1M | $90.89 | $89.12 | B |
| Context window | 400,000 | 2,000,000 | B |
| Max output | 8,192 | 32,768 | B |
| Average score | 83.6 | 85.9 | B |
| Arena Elo | 1460.2 | 1475.8 | B |
| Open weights | No | No | Tie |
Benchmark comparison
Gemini 2.5 Pro Pro wins 1, Grok 3 Max wins 11, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Gemini 2.5 Pro Pro | Grok 3 Max | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 85.2 | 87.3 | 2.1 | Grok 3 Max |
| GPQA Diamond | 81.6 | 80.9 | 0.7 | Gemini 2.5 Pro Pro |
| SWE-bench Verified | 72.1 | 73.6 | 1.5 | Grok 3 Max |
| HumanEval | 88.4 | 91.9 | 3.5 | Grok 3 Max |
| MATH-500 | 86.8 | 91.9 | 5.1 | Grok 3 Max |
| AIME 2025 | 83.3 | 86.6 | 3.3 | Grok 3 Max |
| LiveCodeBench | 76.5 | 79.7 | 3.2 | Grok 3 Max |
| IFEval | 92.0 | 92.6 | 0.6 | Grok 3 Max |
| TruthfulQA | 85.5 | 86.7 | 1.2 | Grok 3 Max |
| HellaSwag | 90.6 | 91.8 | 1.2 | Grok 3 Max |
| MMMU | 78.1 | 82.3 | 4.2 | Grok 3 Max |
| Arena Elo | 1460.2 | 1475.8 | 15.6 | Grok 3 Max |
Price analysis
On a blended 3:1 input-to-output basis, Gemini 2.5 Pro Pro costs about $35.59 per million tokens and Grok 3 Max costs about $35.53. Grok 3 Max is roughly 0% cheaper than Gemini 2.5 Pro Pro. At high volume, that gap compounds quickly, so price should carry real weight unless the quality difference is decisive.
Grok 3 Max has the larger context window at 2,000,000 tokens, compared with 400,000 for Gemini 2.5 Pro Pro. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Gemini 2.5 Pro Pro wins 1, Grok 3 Max wins 11, and 0 are tied. On the index average, Grok 3 Max leads Gemini 2.5 Pro Pro by 2.3 points (85.9 versus 83.6).
The price picture favours Grok 3 Max. The context picture favours Grok 3 Max. 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 3 Max for quality-sensitive work, and check whether its price holds at your expected volume before committing.
Choose Gemini 2.5 Pro Pro if
- You prefer Google DeepMind's tooling or already use it.
Choose Grok 3 Max if
- You want the higher average benchmark score in this index.
- Unit cost matters and you want the cheaper blended price.
- You need the larger 2,000,000-token context window.
- You need the larger 32,768-token output limit.
FAQ
Is Gemini 2.5 Pro Pro better than Grok 3 Max?
On the index average, Grok 3 Max leads Gemini 2.5 Pro Pro by 2.3 points (85.9 versus 83.6). The better choice depends on price, context and your task. Gemini 2.5 Pro Pro wins 1 benchmarks, Grok 3 Max wins 11.
Which is cheaper, Gemini 2.5 Pro Pro or Grok 3 Max?
Grok 3 Max is cheaper on a blended 3:1 basis at about $35.53 per million tokens, versus $35.59 for Gemini 2.5 Pro Pro.
Which has the larger context window?
Grok 3 Max has the larger context window at 2,000,000 tokens. Gemini 2.5 Pro Pro has 400,000 tokens.
Are these models open weights?
Gemini 2.5 Pro Pro is proprietary; Grok 3 Max is proprietary.
Which should I choose for production?
If you need a single default, start with Grok 3 Max for quality-sensitive work, and check whether its price holds at your expected volume before committing.