Lora

github.com/cloneofsimo/lora AI Image Generators Open-source projectOpen source

This repository demonstrates low rank adaptation for quickly fine tuning diffusion models.

github.com/cloneofsimo/lora
Lora homepage screenshot

About Lora

Lora is an open source repository that implements low-rank adaptation (LoRA) for fine-tuning text-to-image diffusion models, particularly Stable Diffusion. Instead of retraining the entire model, it trains a small set of added weights, which the project describes as much faster than the DreamBooth method and as producing files of about 1 MB to 6 MB.

The repository includes training scripts, example LoRA models, and tools for merging LoRA files together. Its LoRA format has been integrated into the diffusers library, but the README notes that the diffusers version uses a different file format. The project also states that LoRA sometimes performs better than full fine-tuning, but it describes extensive comparisons as future work.

Key features

  • Low-rank adaptation fine-tuning of Stable Diffusion models, described as faster than DreamBooth
  • Trained LoRA files of about 1 MB to 6 MB that are easy to share
  • Compatibility with the Hugging Face diffusers library
  • Inpainting training support using an inpainting base model
  • Merging of LoRA files and checkpoints into combined models
  • Pipeline for fine-tuning CLIP, U-Net, and token together
Best for: Developers and researchers who fine-tune Stable Diffusion models and want smaller, shareable customization files.
Good for
  • Produces small fine-tuned files that are easy to share and download
  • Integrated into the diffusers library and supports inpainting
Watch out for
  • The claim that LoRA sometimes outperforms full fine-tuning has not been extensively compared
  • The diffusers-integrated version uses a different file format from this repository

Lora at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Open source
Yes · Source code
Language
English
Last checked
Oct 6, 2026 · Online when checked
Listed
Oct 5, 2026

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Lora FAQ

Does LoRA work with the diffusers library?
LoRA has been officially integrated into the diffusers library, but the README notes that this integrated version uses a different file format from the repository.
Can LoRA be used for inpainting?
Yes. Support for training inpainting on LoRA PTI was added in February 2023 using the --train-inpainting flag with an inpainting Stable Diffusion base model.
Can I try the project without installing it?
A web demo is integrated into Hugging Face Spaces using Gradio. The repository also includes an example Colab notebook for running DreamBooth.
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