Step-1V
API-only multimodal model with heavy video and document OCR emphasis
About
Step-1V is StepFun's vision-language model, launched in 2023 and served through the company's OpenAI-compatible API. It reads images alongside text and is trained with unusual emphasis on video understanding and document OCR, which makes it a decent pressure-tester for on-screen text. Weights are not public, so it is strictly an API product, and signup involves real-name verification with free tokens on signup. Documentation in English is thinner than for Qwen or GLM, and as a smaller vendor StepFun's long-term roadmap is less certain than the big labs'.
Specs
Context window
Pricing
Free quota
API access
Weights
Released
Benchmarks
Provider-reported unless a source says otherwise. Benchmarks are marketing-adjacent by nature — treat them as directional.
Use cases
Trust score — 6/10
Scored 6/10 (metrics tier, metrics-v1). Evidence: Step-1V launched 2023, API-only via StepFun's OpenAI-compatible endpoint; verified via StepFun SKILL doc and API-key tracking issue; No public weights; thin English documentation; vendor roadmap uncertainty disclosed; No benchmark figures surfaced; none invented.