GPT-5.4 vs Muse Spark
For product management work, compared on the PM Index.
- GPT-5.4 leads on the PM Index (55.3 vs 47.3).
| Metric | GPT-5.4 | Muse Spark |
|---|---|---|
| PM Index | 55.3 | 47.3 |
| AA Intelligence | 51.4 | 43.1 |
| AA Coding | 57.2 | 47.5 |
| AA Agentic | 68.0 | 62.0 |
| Blended $/1M | $5.63 | — |
| Output tok/s | 152 | — |