StepFun: Step 3.5 Flash wins on more metrics (5 of 7), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Qwen: Qwen3.6 27B | StepFun: Step 3.5 Flash |
|---|---|---|
| Intelligence Index | 37.1 | 37.8✓ |
| Coding Index | 26.6 | 31.6✓ |
| GPQA Diamond | 83% | 83%✓ |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 76✓ | 43 |
| Latency | 532ms✓ | 558ms |
| Input price /M | $0.288 | $0.090✓ |
| Output price /M | $3.17 | $0.300✓ |
| Context window | 262K | 262K |
| Capabilities | ReasoningToolsJSONVision | ReasoningToolsJSON |