Qwen3.5 397B A17B vs Step 3.7 Flash
Alibaba vs StepFun — benchmarks, pricing, and capabilities side by side.
- •Step 3.7 Flash is cheaper ($0.20 vs $0.39 per 1M input)
- •Qwen3.5 397B A17B has a larger context window (262K)
| Qwen3.5 397B A17B | Step 3.7 Flash | |
|---|---|---|
| Intelligence index | 65.3 | — |
| Developer | Alibaba | StepFun |
| Type | Multimodal | Multimodal |
| Access | Open weights | API only |
| Context window | 262,144 tokens | 256,000 tokens |
| Input price | $0.39 / 1M | $0.20 / 1M |
| Output price | $2.34 / 1M | $1.15 / 1M |
| Speed | 53 tok/s | — |
| Released | February 16, 2026 | May 28, 2026 |
| Parameters | — | — |
| Input modalities | Text, Image, Video | Text, Image, Video |
| Output modalities | Text | Text |