StepFun
StepFun is a high-performance multimodal LLM developed by Chinese startup StepFun.
Free + paidWebAPIiOSLLM-basedMultimodal
Visit websitestepfun.com
Compare with AIRIExplore StepFun alternativesOverview
StepFun is a high-performance multimodal LLM developed by Chinese startup StepFun. It features the Step-1 model with 1 trillion parameters and the latest Step-2 MoE model. It excels in long-context processing and multimodal understanding across text, image, and video, providing both enterprise APIs and consumer-facing chatbot services.
Key features
- 1T Parameter Step-1 Model
- Multimodal Understanding
- Ultra-long Context Support
- Step-2 MoE Architecture
- Real-time Web Search
- High-performance Inference
Pricing
Use cases
- Complex Data Analysis
- Multimodal Content Creation
- Enterprise AI Agents
- Large-scale Document Review
Who it is for
DevelopersEnterprise UsersAI ResearchersGeneral Users
Integrations
WeChatStepFun API
How we verified this
Company, pricing, and feature details come from the primary sources below and our latest verification pass. When sources disagree, the official source and the most recent check win.
Last verified 09/22/2026Verified sources: 2
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