13:43
2026-09-21
platform.stepfun.ai
large-language-models
Step 5 Preview: StepFun's frontier model with 1M context and video input
StepFun released Step 5 Preview, a flagship model for agentic work that natively supports text, image, and video input and offers a 1M-token context window. StepFun says the model delivers frontier-le…