GPT-5.6 Luna vs GPT-5.6 Terra
For product management work, compared on the PM Index.
- GPT-5.6 Terra leads on the PM Index (55.7 vs 52.1).
- GPT-5.6 Luna is cheaper ($2.25 vs $5.63 per 1M tokens).
- GPT-5.6 Luna is faster (204 vs 144 tok/s).
| Metric | GPT-5.6 Luna | GPT-5.6 Terra |
|---|---|---|
| PM Index | 52.1 | 55.7 |
| AA Intelligence | 51.2 | 55.0 |
| AA Coding | 71.4 | 76.7 |
| AA Agentic | 45.6 | 47.4 |
| Blended $/1M | $2.25 | $5.63 |
| Output tok/s | 204 | 144 |