Gemini 2.5 Pro Pro vs Gemini 2.5 Pro Reasoning: which model should you choose?
We compared Gemini 2.5 Pro Pro and Gemini 2.5 Pro Reasoning on price, context window and 12 benchmarks. Gemini 2.5 Pro Reasoning has the stronger average benchmark score; Gemini 2.5 Pro Reasoning 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
Gemini 2.5 Pro Reasoning
Gemini 2.5 Pro Reasoning is a frontier model from Google DeepMind. It offers a 128,000-token context window, costs $16.81 per million input tokens and $67.95 per million output tokens, and averages 83.8 across the index's benchmark suite.
- Input
- $16.81 / 1M
- Output
- $67.95 / 1M
- Context
- 128,000
- Avg score
- 83.8
- Open weights
- No
Specification comparison
| Spec | Gemini 2.5 Pro Pro | Gemini 2.5 Pro Reasoning | Edge |
|---|---|---|---|
| Input price / 1M | $17.16 | $16.81 | B |
| Output price / 1M | $90.89 | $67.95 | B |
| Context window | 400,000 | 128,000 | A |
| Max output | 8,192 | 4,096 | A |
| Average score | 83.6 | 83.8 | B |
| Arena Elo | 1460.2 | 1472.1 | B |
| Open weights | No | No | Tie |
Benchmark comparison
Gemini 2.5 Pro Pro wins 6, Gemini 2.5 Pro Reasoning wins 6, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Gemini 2.5 Pro Pro | Gemini 2.5 Pro Reasoning | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 85.2 | 86.8 | 1.6 | Gemini 2.5 Pro Reasoning |
| GPQA Diamond | 81.6 | 80.0 | 1.6 | Gemini 2.5 Pro Pro |
| SWE-bench Verified | 72.1 | 71.2 | 0.9 | Gemini 2.5 Pro Pro |
| HumanEval | 88.4 | 86.7 | 1.7 | Gemini 2.5 Pro Pro |
| MATH-500 | 86.8 | 87.9 | 1.1 | Gemini 2.5 Pro Reasoning |
| AIME 2025 | 83.3 | 84.2 | 0.9 | Gemini 2.5 Pro Reasoning |
| LiveCodeBench | 76.5 | 74.8 | 1.7 | Gemini 2.5 Pro Pro |
| IFEval | 92.0 | 90.8 | 1.2 | Gemini 2.5 Pro Pro |
| TruthfulQA | 85.5 | 84.0 | 1.5 | Gemini 2.5 Pro Pro |
| HellaSwag | 90.6 | 92.1 | 1.5 | Gemini 2.5 Pro Reasoning |
| MMMU | 78.1 | 82.8 | 4.7 | Gemini 2.5 Pro Reasoning |
| Arena Elo | 1460.2 | 1472.1 | 11.9 | Gemini 2.5 Pro Reasoning |
Price analysis
On a blended 3:1 input-to-output basis, Gemini 2.5 Pro Pro costs about $35.59 per million tokens and Gemini 2.5 Pro Reasoning costs about $29.59. Gemini 2.5 Pro Reasoning is roughly 17% 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.
Gemini 2.5 Pro Pro has the larger context window at 400,000 tokens, compared with 128,000 for Gemini 2.5 Pro Reasoning. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Gemini 2.5 Pro Pro wins 6, Gemini 2.5 Pro Reasoning wins 6, and 0 are tied. On the index average, Gemini 2.5 Pro Reasoning leads Gemini 2.5 Pro Pro by 0.2 points (83.8 versus 83.6).
The price picture favours Gemini 2.5 Pro Reasoning. The context picture favours Gemini 2.5 Pro 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 Gemini 2.5 Pro Reasoning for quality-sensitive work, and check whether its price holds at your expected volume before committing.
Choose Gemini 2.5 Pro Pro if
- You need the larger 400,000-token context window.
- You need the larger 8,192-token output limit.
Choose Gemini 2.5 Pro Reasoning if
- You want the higher average benchmark score in this index.
- Unit cost matters and you want the cheaper blended price.
FAQ
Is Gemini 2.5 Pro Pro better than Gemini 2.5 Pro Reasoning?
On the index average, Gemini 2.5 Pro Reasoning leads Gemini 2.5 Pro Pro by 0.2 points (83.8 versus 83.6). The better choice depends on price, context and your task. Gemini 2.5 Pro Pro wins 6 benchmarks, Gemini 2.5 Pro Reasoning wins 6.
Which is cheaper, Gemini 2.5 Pro Pro or Gemini 2.5 Pro Reasoning?
Gemini 2.5 Pro Reasoning is cheaper on a blended 3:1 basis at about $29.59 per million tokens, versus $35.59 for Gemini 2.5 Pro Pro.
Which has the larger context window?
Gemini 2.5 Pro Pro has the larger context window at 400,000 tokens. Gemini 2.5 Pro Reasoning has 128,000 tokens.
Are these models open weights?
Gemini 2.5 Pro Pro is proprietary; Gemini 2.5 Pro Reasoning is proprietary.
Which should I choose for production?
If you need a single default, start with Gemini 2.5 Pro Reasoning for quality-sensitive work, and check whether its price holds at your expected volume before committing.