Gemini 3.5 Flash vs GPT-5.4
For product management work, compared on the PM Index.
- GPT-5.4 leads on the PM Index (59.1 vs 57.3).
- Gemini 3.5 Flash is cheaper ($3.38 vs $5.63 per 1M tokens).
- Gemini 3.5 Flash is faster (164 vs 160 tok/s).
| Metric | Gemini 3.5 Flash | GPT-5.4 |
|---|---|---|
| PM Index | 57.3 | 59.1 |
| AA Intelligence | 55.3 | 56.8 |
| AA Coding | 45.0 | 57.2 |
| AA Agentic | 70.3 | 68.0 |
| Blended $/1M | $3.38 | $5.63 |
| Output tok/s | 164 | 160 |