StepFun
Chat & Assistants
StepFun
FreeAPI
About
LLM startup founded by former Microsoft VP, Step series models excel in multimodal and long-context processing
Key Features
Step series models (Step-1, Step-2)
Multimodal understanding (text, image, video)
Long-context processing capability
Strong Chinese language performance
API access available
Research-driven development
Pricing
free
Free tier for trial
api
Pay-as-you-go API
Use Cases
Multimodal content analysis
Long document understanding
AI research and experimentation
Chinese NLP tasks
Enterprise AI applications
Pros
Strong research background
Multimodal capabilities
Excellent Chinese performance
Active development
Cons
Newer startup, less established
Limited international exposure
API ecosystem still growing
Latest Update
2026: Step series models continue to advance in multimodal capabilities and long-context processing
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