Claude Opus 4.8 vs GPT-5.6 Luna
For product management work, compared on the PM Index.
- Claude Opus 4.8 leads on the PM Index (55.9 vs 52.1).
- GPT-5.6 Luna is cheaper ($2.25 vs $10.00 per 1M tokens).
- GPT-5.6 Luna is faster (204 vs 57 tok/s).
| Metric | Claude Opus 4.8 | GPT-5.6 Luna |
|---|---|---|
| PM Index | 55.9 | 52.1 |
| AA Intelligence | 55.7 | 51.2 |
| AA Coding | 74.3 | 71.4 |
| AA Agentic | 47.2 | 45.6 |
| Blended $/1M | $10.00 | $2.25 |
| Output tok/s | 57 | 204 |