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Side-by-side comparison for AI agent model selection.
Side-by-side comparison of Gemini 3.1 Pro and GPT-5.3. Gemini 3.1 Pro scores 57 on quality benchmarks at $17.50/1M tokens. GPT-5.3 scores 54 at $12.00/1M tokens.
Gemini 3.1 Pro has higher benchmark scores. GPT-5.3 offers competitive value at a lower price point. For budget-conscious users, go with GPT-5.3. For maximum quality, choose Gemini 3.1 Pro.
| Gemini 3.1 Pro | GPT-5.3 | |
|---|---|---|
| Provider | OpenAI | |
| Tier | Frontier | Premium |
| Quality Score | 57 | 54 |
| Input Price | $2.50/1M | $2.00/1M |
| Output Price | $15.00/1M | $10.00/1M |
| Speed | 113 tok/s | 80 tok/s |
| Context Window | 1.0M | 400K |
| Max Output | 66K | 64K |
| Reasoning | Yes | Yes |
| Vision | Yes | Yes |
| Task | Gemini 3.1 Pro | GPT-5.3 | Savings |
|---|---|---|---|
| Coding | $33.75 | $23.40 | GPT-5.3 saves $10.35 |
| Writing | $9.00 | $6.24 | GPT-5.3 saves $2.76 |
| Analysis | $18.75 | $13.00 | GPT-5.3 saves $5.75 |
| Research | $15.00 | $10.40 | GPT-5.3 saves $4.60 |
| Image Analysis | $4.50 | $3.12 | GPT-5.3 saves $1.38 |
| Math & Reasoning | $11.25 | $7.80 | GPT-5.3 saves $3.45 |