Gemini 3.1 Pro Preview vs Gemini 3.5 Flash
For product management work, compared on the PM Index.
- Gemini 3.1 Pro Preview leads on the PM Index (57.4 vs 57.3).
- Gemini 3.5 Flash is cheaper ($3.38 vs $4.50 per 1M tokens).
- Gemini 3.5 Flash is faster (164 vs 123 tok/s).
| Metric | Gemini 3.1 Pro Preview | Gemini 3.5 Flash |
|---|---|---|
| PM Index | 57.4 | 57.3 |
| AA Intelligence | 57.2 | 55.3 |
| AA Coding | 55.5 | 45.0 |
| AA Agentic | 59.1 | 70.3 |
| Blended $/1M | $4.50 | $3.38 |
| Output tok/s | 123 | 164 |