GPT-5.5 vs Grok 4.5
For product management work, compared on the PM Index.
- GPT-5.5 leads on the PM Index (54.8 vs 54.0).
- Grok 4.5 is cheaper ($3.00 vs $11.25 per 1M tokens).
- Grok 4.5 is faster (90 vs 66 tok/s).
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For product management work, compared on the PM Index.