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ComfyUI vs Stable Diffusion

Our take

Pick ComfyUI if power users who already understand samplers, seeds, and checkpoints. Pick Stable Diffusion if builders who will load a checkpoint (Space, ComfyUI, or diffusers) and can live with the Community License threshold. Skip ComfyUI if people who want a hosted prompt box (Leonardo / Midjourney) with no graph. Skip Stable Diffusion if people who want a Discord aesthetic grid (Midjourney) or Adobe’s commercial

ComfyUI

ComfyUI

node graph for image (and now video)

Stable Diffusion

SD 3.5 Large weights + HF Space.

Best for

ComfyUI A reusable pipeline

Stable Diffusion A diffusion checkpoint you can run locally or in a Space

Free plan

ComfyUI No free plan

Stable Diffusion $0 · under the Community License if you stay under the $1M revenue cap. You pay GPU/electricity. Over $1M: Enterprise license (contact)

Lowest paid

ComfyUI Standard $16/mo yearly

Stable Diffusion Stability API — SD 3.5 Large $0.065

Next step up

ComfyUI Pro-class cards $28

Stable Diffusion

Coding agent

ComfyUI Queue / Run

Stable Diffusion

Runs where

ComfyUI Local or hosted

Stable Diffusion Hosted

Watch out

ComfyUI You bring the GPU

Stable Diffusion Community License is not Apache-2.0

Last checked

ComfyUI 2026-10-19 · comfy.org/pricing

Stable Diffusion 2026-10-20 · platform.stability.ai/pricing

Which one, then?

Pick Stable Diffusion if

builders who will load a checkpoint (Space, ComfyUI, or diffusers) and can live with the Community License threshold.

Read the Stable Diffusion page

Other comparisons