Gemini 3.5 Flash vs GPT-5.6 Luna
For product management work, compared on the PM Index.
- GPT-5.6 Luna leads on the PM Index (52.1 vs 49.6).
- GPT-5.6 Luna is cheaper ($2.25 vs $3.38 per 1M tokens).
- GPT-5.6 Luna is faster (204 vs 161 tok/s).
| Metric | Gemini 3.5 Flash | GPT-5.6 Luna |
|---|---|---|
| PM Index | 49.6 | 52.1 |
| AA Intelligence | 50.2 | 51.2 |
| AA Coding | 70.1 | 71.4 |
| AA Agentic | 37.4 | 45.6 |
| Blended $/1M | $3.38 | $2.25 |
| Output tok/s | 161 | 204 |