DeepSeek V3.1 Terminus vs Step 3.5 Flash 2603
For product management work, compared on the PM Index.
- DeepSeek V3.1 Terminus leads on the PM Index (26.3 vs 26.0).
- Step 3.5 Flash 2603 is cheaper ($0.15 vs $1.92 per 1M tokens).
| Metric | DeepSeek V3.1 Terminus | Step 3.5 Flash 2603 |
|---|---|---|
| PM Index | 26.3 | 26.0 |
| AA Intelligence | 26.3 | 26.0 |
| AA Coding | — | — |
| AA Agentic | — | — |
| Blended $/1M | $1.92 | $0.15 |
| Output tok/s | — | 222 |