Flux Models

Flux text-to-image models.

Model Versions

Flux.1 Family

Model	License	Description
Flux.1 Dev	Apache 2.0	Open source, high quality
Flux.1 Schnell	Apache 2.0	Fast, 4-8 steps
Flux.1 Pro	Proprietary	API only, best quality

Model Comparison

Model	Speed	Quality	Use Case
Dev	Medium	High	Development
Schnell	Fast	Good	Real-time
Pro	Best	Best	Production

Download

Flux.1 Dev

ComfyUI/models/unet/
  flux1-dev.safetensors  # ~23GB

Flux.1 Schnell

ComfyUI/models/unet/
  flux1-schnell.safetensors  # ~23GB

Flux VAE

ComfyUI/models/vae/
  flux_vae.safetensors

Sources

• Hugging Face
• Civitai

Installation

1. Download model
2. Place in appropriate folder
3. Restart ComfyUI

Requirements

Component	Requirement
VRAM	24GB+ recommended
Storage	50GB+
RAM	32GB+

Quantized Versions

For lower VRAM:

Version	VRAM	Quality
FP8	~20GB	Good
INT8	~16GB	Acceptable
INT4	~12GB	Lower

Next Steps

• Flux T2I Tutorial - Generate images
• Flux I2I Tutorial - Image to image
• LoRA Models - Style models