What is StepFun AI?
StepFun AI (formerly Yuewen) is the assistant from Shanghai-based StepFun, a team known for multimodal models with good photo, chart and document understanding. It also offers an autonomous deep-research mode, real-time voice and video calls, and image and video generation, all free.
Advertisement · detail
Quick Facts
- Website
- https://yuewen.cn
- Category
- AI Chatbots
- Region
- China
- Pricing
- Free — Core features are currently free to use.
- Tags
- Updated
- 2026-11-04
Access Notes
This product is built by a company based in China. The interface and content are optimised for Chinese users, and some services ask for a mainland China mobile number or a WeChat account to sign up. Many Chinese AI products also run an international version with a separate domain.
Alternatives to StepFun AI: Doubao, DeepSeek, Kimi, Qwen Chat, ERNIE Bot