ComfyUI

ComfyUI is an open-source tool for building image and video generation workflows by connecting processing steps as nodes.

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ComfyUI is an open-source generative AI tool written in Python and first released in 2023. It represents each stage of the generation process, such as text encoding, sampling, and VAE decoding, as a node, and users connect these nodes to build workflows. It typically runs on the user's own machine and is operated through a web browser.

The tool began with support for Stable Diffusion models and now handles many image and video generation models, including FLUX. Workflows can be saved and shared as files, and community-built custom nodes extend its features. Development is led by Comfy Org.

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Comfy MCP lets Claude Code operate ComfyUI through natural-language requests instead of requiring a person to edit every node in an image-generation graph.


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