Gemini 2.5 Pro Pro vs Gemini 3 Flash Turbo: which model should you choose?
We compared Gemini 2.5 Pro Pro and Gemini 3 Flash Turbo on price, context window and 12 benchmarks. Gemini 3 Flash Turbo has the stronger average benchmark score; Gemini 3 Flash Turbo 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 3 Flash Turbo
Gemini 3 Flash Turbo is a frontier model from Google DeepMind. It offers a 200,000-token context window, costs $17.07 per million input tokens and $69.05 per million output tokens, and averages 84.1 across the index's benchmark suite.
- Input
- $17.07 / 1M
- Output
- $69.05 / 1M
- Context
- 200,000
- Avg score
- 84.1
- Open weights
- No
Specification comparison
| Spec | Gemini 2.5 Pro Pro | Gemini 3 Flash Turbo | Edge |
|---|---|---|---|
| Input price / 1M | $17.16 | $17.07 | B |
| Output price / 1M | $90.89 | $69.05 | B |
| Context window | 400,000 | 200,000 | A |
| Max output | 8,192 | 16,384 | B |
| Average score | 83.6 | 84.1 | B |
| Arena Elo | 1460.2 | 1473.4 | B |
| Open weights | No | No | Tie |
Benchmark comparison
Gemini 2.5 Pro Pro wins 4, Gemini 3 Flash Turbo wins 8, and 0 benchmarks are tied. The table shows the modelled score for each model and the gap.
| Benchmark | Gemini 2.5 Pro Pro | Gemini 3 Flash Turbo | Gap | Winner |
|---|---|---|---|---|
| MMLU-Pro | 85.2 | 87.9 | 2.7 | Gemini 3 Flash Turbo |
| GPQA Diamond | 81.6 | 77.5 | 4.1 | Gemini 2.5 Pro Pro |
| SWE-bench Verified | 72.1 | 72.5 | 0.4 | Gemini 3 Flash Turbo |
| HumanEval | 88.4 | 90.6 | 2.2 | Gemini 3 Flash Turbo |
| MATH-500 | 86.8 | 87.6 | 0.8 | Gemini 3 Flash Turbo |
| AIME 2025 | 83.3 | 81.3 | 2.0 | Gemini 2.5 Pro Pro |
| LiveCodeBench | 76.5 | 78.5 | 2.0 | Gemini 3 Flash Turbo |
| IFEval | 92.0 | 88.9 | 3.1 | Gemini 2.5 Pro Pro |
| TruthfulQA | 85.5 | 87.4 | 1.9 | Gemini 3 Flash Turbo |
| HellaSwag | 90.6 | 89.5 | 1.1 | Gemini 2.5 Pro Pro |
| MMMU | 78.1 | 83.0 | 4.9 | Gemini 3 Flash Turbo |
| Arena Elo | 1460.2 | 1473.4 | 13.2 | Gemini 3 Flash Turbo |
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 3 Flash Turbo costs about $30.06. Gemini 3 Flash Turbo is roughly 16% 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 200,000 for Gemini 3 Flash Turbo. That matters for long documents, large codebases and multi-step agent traces.
Verdict
Across 12 shared benchmarks, Gemini 2.5 Pro Pro wins 4, Gemini 3 Flash Turbo wins 8, and 0 are tied. On the index average, Gemini 3 Flash Turbo leads Gemini 2.5 Pro Pro by 0.5 points (84.1 versus 83.6).
The price picture favours Gemini 3 Flash Turbo. 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 3 Flash Turbo 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.
Choose Gemini 3 Flash Turbo 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 16,384-token output limit.
FAQ
Is Gemini 2.5 Pro Pro better than Gemini 3 Flash Turbo?
On the index average, Gemini 3 Flash Turbo leads Gemini 2.5 Pro Pro by 0.5 points (84.1 versus 83.6). The better choice depends on price, context and your task. Gemini 2.5 Pro Pro wins 4 benchmarks, Gemini 3 Flash Turbo wins 8.
Which is cheaper, Gemini 2.5 Pro Pro or Gemini 3 Flash Turbo?
Gemini 3 Flash Turbo is cheaper on a blended 3:1 basis at about $30.06 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 3 Flash Turbo has 200,000 tokens.
Are these models open weights?
Gemini 2.5 Pro Pro is proprietary; Gemini 3 Flash Turbo is proprietary.
Which should I choose for production?
If you need a single default, start with Gemini 3 Flash Turbo for quality-sensitive work, and check whether its price holds at your expected volume before committing.