ComfyUI is a powerful and modular GUI and backend for Stable Diffusion. It allows you to design and execute complex workflows with its graphical/node/process flow interface. It supports SD1.x, SD2.x, and SDXL with an asynchronous queue system and many optimization features. ComfyUI can load ckpt, safetensors, and diffusers models/checkpoints, and offers functions such as embedding/text inversion, Loras, super networks, area combinations, restoration, illustration, control networks, and model upgrades. It also supports offline work without the need to download any content. You can use ComfyUI to create complex workflows, such as high-resolution restoration. ComfyUI is ideal for those who want to create complex workflows using Stable Diffusion or learn more about it.