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Stable Diffusion web UI vs ComfyUI: catalog facts
Stable Diffusion web UI	ComfyUI
Free The open-source software is available without a license fee. Hosting, hardware and…	Free The open-source software is available without a license fee. Hosting, hardware and…
Windows, macOS, Linux	Windows, macOS, Linux
Includes inpainting, outpainting and configurable generation settings.	Connects models and processing steps in reusable graphs.
Requires Python, model files and suitable processing hardware.	Local models need suitable hardware and separate model downloads.
Downloadable app	Downloadable app
Open source	Open source
License: AGPL-3.0	License: GPL-3.0
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.