Claude Sonnet 5 vs GPT-5.6 Luna
For product management work, compared on the PM Index.
- Claude Sonnet 5 leads on the PM Index (53.9 vs 52.1).
- GPT-5.6 Luna is cheaper ($2.25 vs $4.00 per 1M tokens).
- GPT-5.6 Luna is faster (204 vs 81 tok/s).
| Metric | Claude Sonnet 5 | GPT-5.6 Luna |
|---|---|---|
| PM Index | 53.9 | 52.1 |
| AA Intelligence | 53.4 | 51.2 |
| AA Coding | 71.5 | 71.4 |
| AA Agentic | 46.7 | 45.6 |
| Blended $/1M | $4.00 | $2.25 |
| Output tok/s | 81 | 204 |