Zum Inhalt

Installation Guide

Complete setup instructions for ComfyUI and all supported models.

Prerequisites

  • Python 3.10+
  • Git
  • CUDA 12.6 (for GPU acceleration)
  • ~50 GB free disk space (for models)

ComfyUI Installation

# Clone the repository and install dependencies
cd /your/path/for/installation
git clone https://github.com/Comfy-Org/ComfyUI.git
cd ComfyUI

# Create virtual environment
python3 -m venv venv
source ./venv/bin/activate

# Install requirements
pip install -r requirements.txt
pip install --upgrade accelerate diffusers huggingface_hub

Model Installation

Flux 1.dev (fp8)

cd /your/path/ComfyUI

# Flux model
wget -O models/diffusion_models/flux1-dev-fp8.safetensors \
  https://huggingface.co/Comfy-Org/flux1-dev/resolve/main/flux1-dev-fp8.safetensors

# Text encoders
wget -O models/text_encoders/flux1-dev-clip_l.safetensors \
  https://huggingface.co/comfyanonymous/flux_text_encoders/resolve/main/clip_l.safetensors
wget -O models/text_encoders/flux1-dev-t5xxl_fp8_e4m3fn_scaled.safetensors \
  https://huggingface.co/comfyanonymous/flux_text_encoders/resolve/main/t5xxl_fp8_e4m3fn_scaled.safetensors

# VAE
wget -O models/vae/flux1-dev-ae.safetensors \
  https://huggingface.co/Comfy-Org/Lumina_Image_2.0_Repackaged/resolve/main/split_files/vae/ae.safetensors

Flux 2.dev (fp8)

cd /your/path/ComfyUI

# Flux model
wget -O models/diffusion_models/flux2_dev_fp8mixed.safetensors \
  https://huggingface.co/Comfy-Org/flux2-dev/resolve/main/split_files/diffusion_models/flux2_dev_fp8mixed.safetensors

# Text encoder (Mistral)
wget -O models/text_encoders/flux2-dev-mistral_3_small_flux2_fp8.safetensors \
  https://huggingface.co/Comfy-Org/flux2-dev/resolve/main/split_files/text_encoders/mistral_3_small_flux2_fp8.safetensors

# VAE
wget -O models/vae/flux2-dev-vae.safetensors \
  https://huggingface.co/Comfy-Org/flux2-dev/resolve/main/split_files/vae/flux2-vae.safetensors

SDXL 1.0

cd /your/path/ComfyUI

# Base model
wget -O models/checkpoints/sd_xl_base_1.0.safetensors \
  https://huggingface.co/stabilityai/stable-diffusion-xl-base-1.0/resolve/main/sd_xl_base_1.0.safetensors

# Refiner model
wget -O models/checkpoints/sd_xl_refiner_1.0.safetensors \
  https://huggingface.co/stabilityai/stable-diffusion-xl-refiner-1.0/resolve/main/sd_xl_refiner_1.0.safetensors

SD 3.5 Large

Hugging Face Access Required

You need to request access on Hugging Face before downloading.

  1. Create a Hugging Face account
  2. Request access: stabilityai/stable-diffusion-3.5-large
  3. Generate an Access Token
cd /your/path/ComfyUI
source ./venv/bin/activate

# Login
hf auth login

# Download model
hf download stabilityai/stable-diffusion-3.5-large sd3.5_large.safetensors \
  --local-dir models/checkpoints/

# Text encoders
wget -O models/text_encoders/sd3_5_clip_l.safetensors \
  https://huggingface.co/Comfy-Org/stable-diffusion-3.5-fp8/resolve/main/text_encoders/clip_l.safetensors
wget -O models/text_encoders/sd3_5_clip_g.safetensors \
  https://huggingface.co/Comfy-Org/stable-diffusion-3.5-fp8/resolve/main/text_encoders/clip_g.safetensors
wget -O models/text_encoders/sd3_5_t5xxl_fp8_e4m3fn_scaled.safetensors \
  https://huggingface.co/Comfy-Org/stable-diffusion-3.5-fp8/resolve/main/text_encoders/t5xxl_fp8_e4m3fn_scaled.safetensors

Starting ComfyUI

cd /your/path/ComfyUI
source ./venv/bin/activate
python3 main.py

Accessing the UI

Desktop: Open http://127.0.0.1:8188 in your browser

VM/Server: Forward the port via SSH: 

ssh -L 8188:127.0.0.1:8188 username@hostname_or_ip

Next Steps