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Strengths
- Node-based workflow to visually build complex generation processes
- Completely free and open source, runs locally
- Supports all Stable Diffusion models and LoRA
- Workflows can be saved and shared
- The community provides a large number of ready-made workflows
Best for
- Construct a complex image generation process (picture drawing + partial redrawing)
- Automate batch image generation
- Professional AI image creation workflow
- Learn the underlying principles of Stable Diffusion
- Develop custom AI image processing pipelines
Installation and basic use
ComfyUI requires a certain technical foundation, but it is extremely powerful after installation.
Scenario
Install ComfyUI
Prompt example
# Prerequisite: Python 3.10+ and NVIDIA GPU installed (recommended) # 1. Clone the repository git clone https://github.com/comfyanonymous/ComfyUI cdComfyUI # 2. Install dependencies pip install -r requirements.txt # 3. Download the model (put into models/checkpoints/) # Recommended: SDXL Base 1.0 or SD 1.5 # 4. Start python main.py # 5. Browser access http://127.0.0.1:8188
Output / what to expect
Open the browser and see the node editing interface.
By default, there is a basic Vincent diagram workflow.
Prompt can be modified directly and pictures generated.
Tips
It is recommended to use the ComfyUI Manager plug-in, which can install custom nodes and workflows with one click.
Scenario
Understand node workflow
Prompt example
Nodes of basic Vincent diagram workflow: 1. Load Checkpoint (load model) ↓ 2. CLIP Text Encode (forward Prompt) 3. CLIP Text Encode (negative Prompt) ↓ 4. KSampler (sampler, controls the generation process) ↓ 5. VAE Decode (decoded into pictures) ↓ 6. Save Image Each node has adjustable parameters, Data is transferred between nodes through connections.
Output / what to expect
After understanding the node process,
New functionality can be inserted between any nodes,
Such as adding ControlNet, LoRA, amplification nodes, etc.
Tips
Download the ready-made workflow JSON file from the community and drag it directly into ComfyUI to use it without building it from scratch.