DeepSeek V4 Pro vs GPT-5.5
For product management work, compared on the PM Index.
- GPT-5.5 leads on the PM Index (62.9 vs 54.2).
- DeepSeek V4 Pro is cheaper ($0.54 vs $11.25 per 1M tokens).
- DeepSeek V4 Pro is faster (79 vs 68 tok/s).
| Metric | DeepSeek V4 Pro | GPT-5.5 |
|---|---|---|
| PM Index | 54.2 | 62.9 |
| AA Intelligence | 51.5 | 60.2 |
| AA Coding | 47.5 | 59.1 |
| AA Agentic | 67.2 | 74.1 |
| Blended $/1M | $0.54 | $11.25 |
| Output tok/s | 79 | 68 |