Comfy-Org/ComfyUI
The most powerful and modular diffusion model GUI, api and backend with a graph/nodes interface.
ComfyUI is the most powerful open-source node-graph interface for AI image, video, and audio generation, with support for every major model from Stable Diffusion to Flux 2 and Wan 2.2. If you want fine-grained control over every diffusion parameter and prompt, this is the engine.
Our Review
ComfyUI is the most popular open-source node-graph engine for diffusion model workflows -- 113,000 stars and 13,300 forks as of May 2026. Built in Python on top of PyTorch and released by the Comfy-Org team under the GPL-3.0 license, it gives visual professionals fine-grained control over every model, parameter, and output in image, video, and audio generation pipelines.
What ComfyUI does:
- •Node-graph visual workflow drag-and-drop nodes for prompts, samplers, conditioning, VAE, and post-processing, with no Python required for most setups.
- •Every major image model SD 1.x/2.x/SDXL, SD 3/3.5, Flux, Flux 2, Lumina Image 2.0, Hunyuan Image 2.1, Qwen Image, HiDream, Z Image, Pixart, AuraFlow, Ernie.
- •Video models Stable Video Diffusion, Mochi, LTX-Video, Hunyuan Video 1.5, Wan 2.1, Wan 2.2 for text-to-video and image-to-video workflows.
- •Image editing Omnigen 2, Flux Kontext, HiDream E1.1, Qwen Image Edit for inpainting, outpainting, and conditional edits.
- •API nodes for closed models Nano Banana, Seedance, Hunyuan3D, and other paid commercial models via integrated API nodes.
- •App Mode for simple UIs expose complex workflows as one-click apps for end users without showing the underlying node graph.
- •Cross-platform Windows, macOS, Linux with NVIDIA, AMD, Intel, Apple Silicon, and Huawei Ascend GPU support.
ComfyUI ecosystem:
- •Desktop application one-click installer for Windows and macOS, the easiest way to start.
- •Comfy Cloud official paid hosted version for users without local GPU hardware.
- •Workflow templates curated template library at comfy.org/workflows with starter graphs for every model family.
- •Custom nodes thousands of community-built nodes for ControlNet, LoRA, IPAdapter, animation, and specialized post-processing.
Getting started:
Install the Desktop App from comfy.org/download for Windows or macOS -- the easiest path. For Linux or all GPU types, use the manual install or Windows Portable. Then open any workflow from comfy.org/workflows to see image generation in action. Full docs at comfy.org/docs.
Limitations:
The node-graph interface has a learning curve, so it is not appropriate for users who want a Midjourney-style one-prompt-one-image experience. GPL-3.0 license restricts inclusion in proprietary commercial products without GPL compliance. Local generation requires meaningful GPU VRAM (12 GB+ for SDXL, 24 GB+ for video models), so low-end laptops will struggle. Comfy Cloud is the recommended path for users without dedicated hardware.
Our Verdict
ComfyUI in 2026 is the default open-source engine for serious AI image and video generation. 113,000 GitHub stars, 13,300 forks, weekly releases, GPL-3.0 license, and support for every major model family from Stable Diffusion 1.x to Flux 2 and Wan 2.2.
For Vibe Builders working in visual creative fields, ComfyUI offers control that closed services like Midjourney or DALL-E cannot match. Build a workflow once, save it as an App Mode UI, and rerun thousands of variations with parameter sweeps. Pair with custom nodes and you can chain ControlNet, LoRA, and IPAdapter into pipelines no managed service exposes.
For Developers, the API endpoints integrate workflows into production pipelines without ever opening the node graph. The Python codebase is fully open, allowing custom samplers, custom models, and bespoke post-processing nodes for your specific use case.
Skip ComfyUI if you want one-click magic with no setup -- Midjourney or DALL-E in ChatGPT are simpler. Skip if your laptop has no GPU or only integrated graphics -- the cloud version is required. Skip if your project is closed-source commercial and GPL-3.0 compliance is a problem. For pure image generation with a simple text UI, desktop apps like Diffusion Bee or Draw Things may be a better fit.
Frequently Asked Questions
What is ComfyUI?
ComfyUI is the most popular open-source node-graph interface for AI image, video, and audio generation. Built in Python on top of PyTorch by the Comfy-Org team and released under GPL-3.0, it supports every major diffusion model from Stable Diffusion 1.x through Flux 2 and Wan 2.2. As of May 2026 it has 113,000 GitHub stars.
Is ComfyUI free?
Yes. ComfyUI is fully free and open source under the GPL-3.0 license. You can install the Desktop App, Windows Portable, or manual install at zero cost. The only paid option is Comfy Cloud, the official hosted version for users who do not have a local GPU. All AI models you use with ComfyUI are downloaded separately from their respective hosts.
ComfyUI vs Stable Diffusion WebUI -- which should I choose?
Choose ComfyUI when you want a node-graph workflow with fine-grained control over every step (samplers, conditioning, VAE, custom post-processing). Choose Stable Diffusion WebUI (Automatic1111) when you want a tabbed interface for simpler text-to-image generation. ComfyUI is more powerful and modular but has a steeper learning curve to get started.
How do I install ComfyUI?
The easiest way is the Desktop Application from comfy.org/download, available for Windows and macOS as a one-click installer. For Linux users or those who want every GPU type supported (AMD, Intel, Apple Silicon, Huawei Ascend), use the manual install instructions in the README. Windows Portable is an option for getting the latest commits with full portability.
What GPU do I need for ComfyUI?
For local generation you need a dedicated GPU with sufficient VRAM. 12 GB+ is recommended for SDXL workflows, and 24 GB+ for video models like Wan 2.2 or Hunyuan Video. Integrated graphics or laptops with under 8 GB VRAM will struggle. If your hardware does not meet these requirements, use Comfy Cloud or rent GPU time on a service like RunPod or Lambda Labs.
What license does ComfyUI use?
ComfyUI uses the GPL-3.0 license.
What are alternatives to ComfyUI?
Explore related tools and alternatives on My AI Guide.
Open source & community-verified
GPL-3.0 licensed: free to use in any project, no strings attached. 113,714 developers have starred this, meaning the community has reviewed and trusted it.
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