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by Comfy-Org

flux1-dev

flux1-dev is the ComfyUI-native single-file distribution of Black Forest Labs' FLUX.1-dev, a rectified flow transformer for text-to-image generation. FLUX.1-dev is the open-weights guidance-distilled variant (non-commercial) of the FLUX.1 series, offering substantially improved typography, anatomical accuracy, and prompt adherence over SD-family models. This package is formatted as a diffusion_single_file artifact for direct use in ComfyUI workflows.

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From the model card

Fields below are copied from the tags and counters on the HuggingFace repository Comfy-Org/flux1-dev at our last fetch. They are set by the uploader, not verified by us; rows with no tag are omitted. How this page is made.

Publisher (HF namespace)
Comfy-Org
License tag
other — read the license file in the repo before relying on it
Lineage
Downloads (HF counter at last fetch)
400,167
Likes (HF counter at last fetch)
659
Model card
https://huggingface.co/Comfy-Org/flux1-dev

Use cases

  • High-fidelity image generation inside ComfyUI workflows
  • Generating images with accurate in-image text and typography
  • Anatomically consistent character and portrait generation
  • Base checkpoint for FLUX LoRA fine-tuning experiments
  • Comparing FLUX architecture quality against SDXL checkpoints

Pros

  • Rectified flow training produces cleaner gradient paths and sharper outputs than DDPM-based models
  • Better text rendering inside generated images than most SD-family models
  • Single-file format simplifies ComfyUI installation
  • Backed by Black Forest Labs (original Stable Diffusion team)

Cons

  • FLUX.1-dev license prohibits commercial use; FLUX.1-schnell or Pro required for commercial projects
  • High VRAM requirements (≥16GB recommended for full quality)
  • ComfyUI-specific packaging; requires adaptation for Automatic1111 or other UIs
  • Slower inference than distilled FLUX variants

Tags

diffusion-single-filecomfyuibase_model:black-forest-labs/FLUX.1-Canny-devbase_model:finetune:black-forest-labs/FLUX.1-Canny-devlicense:otherregion:us