StepFun: Step 5 Preview
stepfun/step-5-previewStep 5 Preview is StepFun's flagship model for agentic work, built on a sparse Mixture-of-Experts architecture (27B active / 600B total parameters). It performs strongly in software engineering and professional...
- Context window
- 1,000,000 tokens
- Input
- text · image · video
- Output
- text
- Relay support
- Text & vision
Reference prices & points
Our global markup: 15% · 1 USD = 10,000 points · Price version 0
| Billing unit | OpenRouter / USD | Our reference / USD | Points |
|---|---|---|---|
| Input / 1M tokens | $1 | $1.15 | 11,500 |
| Output / 1M tokens | $2.7 | $3.105 | 31,050 |
| Cache read / 1M tokens | $0.1 | $0.115 | 1,150 |
Actual charge = the OpenRouter request cost × the markup locked for that request. Catalogue rates may be routing references; caching, long context, images and audio are charged when used. Listed prices do not mean every capability is available through this relay.
Catalogue time: 2026-11-11T23:05:25.472Z · Live catalogue
View all upstream price fields
{
"prompt": "0.000001",
"completion": "0.0000027",
"input_cache_read": "0.0000001"
}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.