stepfun-ai/Step-3.5-Flash vs DeepSeek V4 Flash
DeepSeek V4 Flash is cheaper on output tokens, while DeepSeek V4 Flash offers a larger context window. Choose stepfun-ai/Step-3.5-Flash or DeepSeek V4 Flash based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | stepfun-ai/Step-3.5-Flash | DeepSeek V4 Flash |
|---|---|---|
| Provider | SiliconFlow (China) | SiliconFlow (China) |
| Input / 1M tokens | $0.10 | $0.14 |
| Output / 1M tokens | $0.30 | $0.28 |
| Context window | 262K | 1M |
| Parameters | — | 284B |
| Open weights | No | Yes |
| Released | Feb 2026 | Apr 2026 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.