GELab-Zero is a fully open-source GUI Agent solution developed by StepFun’s GELab team. It provides both the agent model and the underlying infrastructure, including an MCP server for multi-device management and task distribution. The project includes a 4B parameter preview model hosted on Hugging Face and ModelScope, along with datasets like AndroidDaily for training. It supports plug-and-play engineering with no cloud dependencies and complete privacy control.