StepFun: Step 3.7 Flash wins on more metrics (5 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | StepFun: Step 3.7 Flash | Tencent: Hy3 preview |
|---|---|---|
| Intelligence Index | 42.6✓ | 41.9 |
| Coding Index | 37.1✓ | 36.5 |
| GPQA Diamond | 81% | 87%✓ |
| Design Arena Elo | 1232✓ | — |
| Speed (tokens/sec) | 82✓ | 61 |
| Latency | 1.5s✓ | 3.5s |
| Input price /M | $0.200 | $0.063✓ |
| Output price /M | $1.15 | $0.210✓ |
| Context window | 256K | 262K✓ |
| Capabilities | ReasoningToolsJSONVision | ReasoningTools |