14B autoregressive text-to-image model with a 157M flow-matching head.
Released
Aug 14, 2025
Context window
Not disclosed
Max output
Not disclosed
Parameters
14B
Input price
Not disclosed
Output price
Not disclosed
Prices are first-party list prices in USD at the standard tier. Last verified Oct 30, 2026.
Pricing
No first-party API. This is an open-weights release you can run yourself.
Specifications
- Developer
- StepFun
- Model type
- Image gen
- Architecture
- Not disclosed
- Parameters
- 14B
- Input
- Text
- Output
- Image
- Knowledge cutoff
- Not disclosed
- License
- Apache License 2.0
- API access
- No first-party API