Cube Studio is an open-source cloud-native one-stop machine learning and deep learning platform. It provides full-stack MLOps capabilities including notebook-based online development, drag-and-drop pipeline orchestration, distributed multi-node/multi-GPU training, hyperparameter search, and vGPU virtualization for inference. For LLMs specifically, it supports SFT fine-tuning, reward model training, and reinforcement learning training alongside vLLM/Ollama-based multi-node inference serving with private knowledge base integration.