ComfyUI
Free, open source node editor for AI images and video
Free open source app for AI image and video generation. You connect nodes into a workflow and run models like Stable Diffusion and Flux on your own PC.
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About ComfyUI
ComfyUI is a free program for making AI images and video on your own computer. Instead of a single prompt box, you build a workflow from nodes: load a model, add a prompt, pick a sampler, upscale, save. It looks technical at first, but it gives you full control.
It runs most open models, like Stable Diffusion, Flux and many video models, and thousands of community workflows and custom nodes can be loaded with one click. Everything runs locally, so your images stay on your machine and there are no monthly limits.
You need a decent graphics card to run it well. If you don't have one, Comfy Cloud runs the same workflows on their servers, with a few free runs to start and paid plans from $20 a month.
Best for
- AI artists
- Designers
- Developers
- Power users with a gaming PC
Key features
- Node based workflow editor
- Runs Stable Diffusion, Flux and video models
- Runs locally, no limits or monthly fee
- Thousands of community workflows
- Custom nodes and model manager
- Image to image, inpainting and upscaling
- API for automating workflows
- Comfy Cloud if you have no GPU
Pros & cons
Pros
- Completely free and open source
- Full control over every step
- Runs offline, images stay private
- Huge community of workflows
Cons
- Steep learning curve for beginners
- Needs a strong graphics card
- Interface looks technical
Pricing plans
Free and open source, runs on your own computer
5 free runs on real GPUs for new users
30 minute max workflow runtime, 4,200 credits a month ($16 / month billed yearly)
Import your own models, 7,400 credits a month ($28 / month billed yearly)
Runs up to 1 hour, more API workers, 21,100 credits a month ($80 / month billed yearly)
Up to 50 members, shared credit pool, often discounted
Prices are shown in USD and can change. They may also vary by country, currency, taxes and billing period (monthly or yearly). Always confirm the final price on the official website.