ComfyUI
Wire together nodes to build fully reproducible image and video generation pipelines for Stable Diffusion and Flux, then share the exact workflow as a JSON file.
Overview
ComfyUI replaces the single prompt box with a node-based canvas for Stable Diffusion, Flux, and other diffusion models, letting you wire together model loading, sampling, encoding, and post-processing into a fully modular pipeline. Because every pipeline is a graph of explicit steps, workflows are fully reproducible: export the graph as a JSON file and anyone can load your exact setup, model choices, and parameters with one click. The built-in manager gives access to an ecosystem of more than 5,000 community-developed custom nodes covering upscaling, ControlNet, video generation, and specialized workflows well beyond basic image generation. Local-first operation means images and video are generated entirely on your own hardware with no per-image fees, and the architecture runs efficiently enough for modest consumer GPUs. Self-hosting is completely free; an optional paid cloud version exists for people without local GPU hardware. ComfyUI suits designers, technical artists, and teams who want granular, repeatable control over generation pipelines rather than a locked, one-size-fits-all prompt box.
Key Features
- Node-based visual pipeline editor
- 5,000+ community custom nodes
- Supports Flux, SDXL, and other diffusion models
- Reproducible JSON workflow files
- • Full control over every step of the generation pipeline
- • Reproducible and shareable workflows via JSON export
- • Runs efficiently on modest consumer GPUs
- • Steep learning curve compared to simple prompt boxes
- • Node graphs for advanced workflows can get visually complex