threestudio is a unified framework for 3D content generation from text prompts, single images, and few-shot images, by lifting 2D text-to-image generation models into 3D. It implements numerous cutting-edge methods including DreamFusion, ProlificDreamer, Magic3D, Fantasia3D, Zero-1-to-3, Magic123, and Gaussian Splatting. The framework features flexible OmegaConf configuration, multi-GPU training, mesh export (OBJ+MTL), Gradio web interface, and VRAM optimization. It also supports 4D generation, avatar creation, and 3D editing via InstructNeRF2NeRF.