StepFun: Step 3.5 Flash
stepfun/step-3.5-flashStep 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
- Context window
- 262,144 tokens
- Input
- text
- Output
- text
- Relay support
- Text & documents
Reference prices & points
CNY 1 = 1,000 points. The table shows site reference rates; charges use actual usage. · Price version 2
| Billing unit | Our price / CNY | Points |
|---|---|---|
| Input / 1M tokens | ¥0.86 | 860 |
| Output / 1M tokens | ¥2.58 | 2,580 |
Catalogue rates are for reference. The settled charge uses actual usage for that request, at the price version locked when it was reserved. Caching, long context, images and audio are charged when used. Listed prices do not mean every capability is available through this relay.
Catalogue time: 2026-11-13T17:59:18.241Z · Live catalogue
Integration & availability
Use /v1/chat/completions for non-streaming, multi-turn conversations. Models marked for vision accept images; documents can be extracted to text in the workspace. Create a site API key and ensure you have enough points and the service is enabled. Provider availability, context and budget limits apply.