GPT-5.5 (xhigh) vs Grok 4.1 Fast (Reasoning)
For product management work, compared on the PM Index.
- GPT-5.5 (xhigh) leads on the PM Index (62.9 vs 40.0).
| Metric | GPT-5.5 (xhigh) | Grok 4.1 Fast (Reasoning) |
|---|---|---|
| PM Index | 62.9 | 40.0 |
| AA Intelligence | 60.2 | 38.6 |
| AA Coding | 59.1 | 30.9 |
| AA Agentic | 74.1 | 49.3 |
| Blended $/1M | $11.25 | — |
| Output tok/s | 64 | — |