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Side-by-side comparison of GPT-5.3 and Gemini 3 Flash. GPT-5.3 scores 70 on quality benchmarks at $12.00/1M tokens. Gemini 3 Flash scores 42 at $0.38/1M tokens.
GPT-5.3 has higher benchmark scores. Gemini 3 Flash offers competitive value at a lower price point. For budget-conscious users, go with Gemini 3 Flash. For maximum quality, choose GPT-5.3.
| GPT-5.3 | Gemini 3 Flash | |
|---|---|---|
| Provider | OpenAI | |
| Tier | Frontier | Budget |
| Quality Score | 70 | 42 |
| Input Price | $2.00/1M | $0.07/1M |
| Output Price | $10.00/1M | $0.30/1M |
| Speed | 80 tok/s | 200 tok/s |
| Context Window | 400K | 1.0M |
| Max Output | 64K | 66K |
| Reasoning | Yes | No |
| Vision | Yes | Yes |
| Task | GPT-5.3 | Gemini 3 Flash | Savings |
|---|---|---|---|
| Coding | $23.40 | $0.74 | Gemini 3 Flash saves $22.66 |
| Writing | $6.24 | $0.20 | Gemini 3 Flash saves $6.04 |
| Analysis | $13.00 | $0.41 | Gemini 3 Flash saves $12.59 |
| Research | $10.40 | $0.33 | Gemini 3 Flash saves $10.07 |
| $2.08 | $0.07 | Gemini 3 Flash saves $2.01 | |
| Summarization | $4.16 | $0.13 | Gemini 3 Flash saves $4.03 |