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Side-by-side comparison for AI agent model selection.
Side-by-side comparison of Gemini 3.1 Pro and GPT-5.5. Gemini 3.1 Pro scores 57 on quality benchmarks at $17.50/1M tokens. GPT-5.5 scores 60 at $35.00/1M tokens.
Gemini 3.1 Pro is the more affordable option and costs less per token. GPT-5.5 leads in quality benchmarks. For budget-conscious users, go with Gemini 3.1 Pro. For maximum quality, choose GPT-5.5.
| Gemini 3.1 Pro | GPT-5.5 | |
|---|---|---|
| Provider | OpenAI | |
| Tier | Frontier | Frontier |
| Quality Score | 57 | 60 |
| Input Price | $2.50/1M | $5.00/1M |
| Output Price | $15.00/1M | $30.00/1M |
| Speed | 113 tok/s | 81 tok/s |
| Context Window | 1.0M | 1.1M |
| Max Output | 66K | 128K |
| Reasoning | Yes | Yes |
| Vision | Yes | Yes |
| Task | Gemini 3.1 Pro | GPT-5.5 | Savings |
|---|---|---|---|
| Coding | $33.75 | $67.50 | Gemini 3.1 Pro saves $33.75 |
| Writing | $9.00 | $18.00 | Gemini 3.1 Pro saves $9.00 |
| Analysis | $18.75 | $37.50 | Gemini 3.1 Pro saves $18.75 |
| Research | $15.00 | $30.00 | Gemini 3.1 Pro saves $15.00 |
| Image Analysis | $4.50 | $9.00 | Gemini 3.1 Pro saves $4.50 |
| Math & Reasoning | $11.25 | $22.50 | Gemini 3.1 Pro saves $11.25 |