Model tracker / StepFun
Step 3.7 Flash
Step 3.7 Flash is a fast open-weight model from StepFun, released 29 May 2026. At StepFun it costs $0.20 per million input tokens and $1.15 per million output tokens, with a 256K-token context window. 2 providers serve it; the cheapest is Novita AI at $0.20 input and $1.15 output.
- Made by
- StepFun
- Released
- 2026-05-29
- Status
- Generally available
- Tier
- Fast
- Weights
- Open
- Context window
- 256,000 tokens
- Input
- text, image, video
- API id
step-3.7-flash
Step 3.7 Flash price at 2 providers
US dollars per million tokens. Blended is 3 input tokens for every output token, one number to compare on. The cheapest blended price is highlighted.
| Provider | Input | Output | Cached input | Blended | Batch | Checked |
|---|---|---|---|---|---|---|
| Novita AI · stepfun/step-3.7-flash | $0.20 | $1.15 | $0.04 | $0.438 | – | 2026-10-14 |
| StepFun · maker | $0.20 | $1.15 | $0.04 | $0.438 | – | 2026-10-14 |
- StepFun: Output includes reasoning tokens. Three reasoning effort levels (low, medium, high).
Models like Step 3.7 Flash
Other fast models closest in price, at each maker's own price or the cheapest provider.
| Model | Input | Output | Context | Weights |
|---|---|---|---|---|
| Step 3.7 Flash | $0.20 | $1.15 | 256K | Open |
| DeepSeek V4.1 Flash DeepSeek | $0.30 | $1.20 | 1M | Open |
| Gemini 3.1 Flash-Lite Google | $0.25 | $1.50 | 1M | Closed |
| GLM-5.3 FlashX Z.ai | $0.37 | $1.25 | 1M | Open |
| Muse Glimmer 30B Meta | $0.35 | $1.50 | 131K | Open |
| Gemma 4 26B A4B Google | $0.15 | $0.60 | 262K | Open |
Compare them all in the model tracker →
Step 3.7 Flash FAQ
How much does Step 3.7 Flash cost?
Step 3.7 Flash costs $0.20 per million input tokens and $1.15 per million output tokens at StepFun, and $0.04 per million cached input tokens. Prices are list prices in US dollars, last checked 14 October 2026.
What is Step 3.7 Flash's context window?
Step 3.7 Flash takes up to 256,000 tokens in one request.
Is Step 3.7 Flash open weight?
Yes. StepFun publishes the weights, so you can run Step 3.7 Flash yourself or at any host that serves it.
Where can I use Step 3.7 Flash?
Step 3.7 Flash is available from Novita AI and StepFun. At StepFun, call it as step-3.7-flash.