Gemini 3.5 Flash vs GPT-5.5
For product management work, compared on the PM Index.
- GPT-5.5 leads on the PM Index (62.9 vs 57.3).
- Gemini 3.5 Flash is cheaper ($3.38 vs $11.25 per 1M tokens).
- Gemini 3.5 Flash is faster (164 vs 68 tok/s).
| Metric | Gemini 3.5 Flash | GPT-5.5 |
|---|---|---|
| PM Index | 57.3 | 62.9 |
| AA Intelligence | 55.3 | 60.2 |
| AA Coding | 45.0 | 59.1 |
| AA Agentic | 70.3 | 74.1 |
| Blended $/1M | $3.38 | $11.25 |
| Output tok/s | 164 | 68 |