---
title: AI Toolkit
emoji: 📹
colorFrom: gray
colorTo: red
sdk: docker
pinned: true
short_description: Ostris AI Toolkit running as a HF space
app_port: 8675
---
# AI Toolkit by Ostris
AI Toolkit is an all in one training suite for diffusion models. I try to support all the latest models on consumer grade hardware. Image and video models. It can be run as a GUI or CLI. It is designed to be easy to use but still have every feature imaginable.
## Support My Work
If you enjoy my projects or use them commercially, please consider sponsoring me. Every bit helps! 💖
[Sponsor on GitHub](https://github.com/orgs/ostris) | [Support on Patreon](https://www.patreon.com/ostris) | [Donate on PayPal](https://www.paypal.com/donate/?hosted_button_id=9GEFUKC8T9R9W)
### Current Sponsors
All of these people / organizations are the ones who selflessly make this project possible. Thank you!!
_Last updated: 2025-08-08 17:01 UTC_
---
## Installation
Requirements:
- python >3.10
- Nvidia GPU with enough ram to do what you need
- python venv
- git
Linux:
```bash
git clone https://github.com/ostris/ai-toolkit.git
cd ai-toolkit
python3 -m venv venv
source venv/bin/activate
# install torch first
pip3 install --no-cache-dir torch==2.7.0 torchvision==0.22.0 torchaudio==2.7.0 --index-url https://download.pytorch.org/whl/cu126
pip3 install -r requirements.txt
```
Windows:
If you are having issues with Windows. I recommend using the easy install script at [https://github.com/Tavris1/AI-Toolkit-Easy-Install](https://github.com/Tavris1/AI-Toolkit-Easy-Install)
```bash
git clone https://github.com/ostris/ai-toolkit.git
cd ai-toolkit
python -m venv venv
.\venv\Scripts\activate
pip install --no-cache-dir torch==2.7.0 torchvision==0.22.0 torchaudio==2.7.0 --index-url https://download.pytorch.org/whl/cu126
pip install -r requirements.txt
```
# AI Toolkit UI
The AI Toolkit UI is a web interface for the AI Toolkit. It allows you to easily start, stop, and monitor jobs. It also allows you to easily train models with a few clicks. It also allows you to set a token for the UI to prevent unauthorized access so it is mostly safe to run on an exposed server.
## Running the UI
Requirements:
- Node.js > 18
The UI does not need to be kept running for the jobs to run. It is only needed to start/stop/monitor jobs. The commands below
will install / update the UI and it's dependencies and start the UI.
```bash
cd ui
npm run build_and_start
```
You can now access the UI at `http://localhost:8675` or `http://:8675` if you are running it on a server.
## Securing the UI
If you are hosting the UI on a cloud provider or any network that is not secure, I highly recommend securing it with an auth token.
You can do this by setting the environment variable `AI_TOOLKIT_AUTH` to super secure password. This token will be required to access
the UI. You can set this when starting the UI like so:
```bash
# Linux
AI_TOOLKIT_AUTH=super_secure_password npm run build_and_start
# Windows
set AI_TOOLKIT_AUTH=super_secure_password && npm run build_and_start
# Windows Powershell
$env:AI_TOOLKIT_AUTH="super_secure_password"; npm run build_and_start
```
## FLUX.1 Training
### Tutorial
To get started quickly, check out [@araminta_k](https://x.com/araminta_k) tutorial on [Finetuning Flux Dev on a 3090](https://www.youtube.com/watch?v=HzGW_Kyermg) with 24GB VRAM.
### Requirements
You currently need a GPU with **at least 24GB of VRAM** to train FLUX.1. If you are using it as your GPU to control
your monitors, you probably need to set the flag `low_vram: true` in the config file under `model:`. This will quantize
the model on CPU and should allow it to train with monitors attached. Users have gotten it to work on Windows with WSL,
but there are some reports of a bug when running on windows natively.
I have only tested on linux for now. This is still extremely experimental
and a lot of quantizing and tricks had to happen to get it to fit on 24GB at all.
### FLUX.1-dev
FLUX.1-dev has a non-commercial license. Which means anything you train will inherit the
non-commercial license. It is also a gated model, so you need to accept the license on HF before using it.
Otherwise, this will fail. Here are the required steps to setup a license.
1. Sign into HF and accept the model access here [black-forest-labs/FLUX.1-dev](https://huggingface.co/black-forest-labs/FLUX.1-dev)
2. Make a file named `.env` in the root on this folder
3. [Get a READ key from huggingface](https://huggingface.co/settings/tokens/new?) and add it to the `.env` file like so `HF_TOKEN=your_key_here`
### FLUX.1-schnell
FLUX.1-schnell is Apache 2.0. Anything trained on it can be licensed however you want and it does not require a HF_TOKEN to train.
However, it does require a special adapter to train with it, [ostris/FLUX.1-schnell-training-adapter](https://huggingface.co/ostris/FLUX.1-schnell-training-adapter).
It is also highly experimental. For best overall quality, training on FLUX.1-dev is recommended.
To use it, You just need to add the assistant to the `model` section of your config file like so:
```yaml
model:
name_or_path: "black-forest-labs/FLUX.1-schnell"
assistant_lora_path: "ostris/FLUX.1-schnell-training-adapter"
is_flux: true
quantize: true
```
You also need to adjust your sample steps since schnell does not require as many
```yaml
sample:
guidance_scale: 1 # schnell does not do guidance
sample_steps: 4 # 1 - 4 works well
```
### Training
1. Copy the example config file located at `config/examples/train_lora_flux_24gb.yaml` (`config/examples/train_lora_flux_schnell_24gb.yaml` for schnell) to the `config` folder and rename it to `whatever_you_want.yml`
2. Edit the file following the comments in the file
3. Run the file like so `python run.py config/whatever_you_want.yml`
A folder with the name and the training folder from the config file will be created when you start. It will have all
checkpoints and images in it. You can stop the training at any time using ctrl+c and when you resume, it will pick back up
from the last checkpoint.
IMPORTANT. If you press crtl+c while it is saving, it will likely corrupt that checkpoint. So wait until it is done saving
### Need help?
Please do not open a bug report unless it is a bug in the code. You are welcome to [Join my Discord](https://discord.gg/VXmU2f5WEU)
and ask for help there. However, please refrain from PMing me directly with general question or support. Ask in the discord
and I will answer when I can.
## Gradio UI
To get started training locally with a with a custom UI, once you followed the steps above and `ai-toolkit` is installed:
```bash
cd ai-toolkit #in case you are not yet in the ai-toolkit folder
huggingface-cli login #provide a `write` token to publish your LoRA at the end
python flux_train_ui.py
```
You will instantiate a UI that will let you upload your images, caption them, train and publish your LoRA
## Training in RunPod
Example RunPod template: **runpod/pytorch:2.2.0-py3.10-cuda12.1.1-devel-ubuntu22.04**
> You need a minimum of 24GB VRAM, pick a GPU by your preference.
#### Example config ($0.5/hr):
- 1x A40 (48 GB VRAM)
- 19 vCPU 100 GB RAM
#### Custom overrides (you need some storage to clone FLUX.1, store datasets, store trained models and samples):
- ~120 GB Disk
- ~120 GB Pod Volume
- Start Jupyter Notebook
### 1. Setup
```
git clone https://github.com/ostris/ai-toolkit.git
cd ai-toolkit
git submodule update --init --recursive
python -m venv venv
source venv/bin/activate
pip install torch
pip install -r requirements.txt
pip install --upgrade accelerate transformers diffusers huggingface_hub #Optional, run it if you run into issues
```
### 2. Upload your dataset
- Create a new folder in the root, name it `dataset` or whatever you like.
- Drag and drop your .jpg, .jpeg, or .png images and .txt files inside the newly created dataset folder.
### 3. Login into Hugging Face with an Access Token
- Get a READ token from [here](https://huggingface.co/settings/tokens) and request access to Flux.1-dev model from [here](https://huggingface.co/black-forest-labs/FLUX.1-dev).
- Run ```huggingface-cli login``` and paste your token.
### 4. Training
- Copy an example config file located at ```config/examples``` to the config folder and rename it to ```whatever_you_want.yml```.
- Edit the config following the comments in the file.
- Change ```folder_path: "/path/to/images/folder"``` to your dataset path like ```folder_path: "/workspace/ai-toolkit/your-dataset"```.
- Run the file: ```python run.py config/whatever_you_want.yml```.
### Screenshot from RunPod
## Training in Modal
### 1. Setup
#### ai-toolkit:
```
git clone https://github.com/ostris/ai-toolkit.git
cd ai-toolkit
git submodule update --init --recursive
python -m venv venv
source venv/bin/activate
pip install torch
pip install -r requirements.txt
pip install --upgrade accelerate transformers diffusers huggingface_hub #Optional, run it if you run into issues
```
#### Modal:
- Run `pip install modal` to install the modal Python package.
- Run `modal setup` to authenticate (if this doesn’t work, try `python -m modal setup`).
#### Hugging Face:
- Get a READ token from [here](https://huggingface.co/settings/tokens) and request access to Flux.1-dev model from [here](https://huggingface.co/black-forest-labs/FLUX.1-dev).
- Run `huggingface-cli login` and paste your token.
### 2. Upload your dataset
- Drag and drop your dataset folder containing the .jpg, .jpeg, or .png images and .txt files in `ai-toolkit`.
### 3. Configs
- Copy an example config file located at ```config/examples/modal``` to the `config` folder and rename it to ```whatever_you_want.yml```.
- Edit the config following the comments in the file, **be careful and follow the example `/root/ai-toolkit` paths**.
### 4. Edit run_modal.py
- Set your entire local `ai-toolkit` path at `code_mount = modal.Mount.from_local_dir` like:
```
code_mount = modal.Mount.from_local_dir("/Users/username/ai-toolkit", remote_path="/root/ai-toolkit")
```
- Choose a `GPU` and `Timeout` in `@app.function` _(default is A100 40GB and 2 hour timeout)_.
### 5. Training
- Run the config file in your terminal: `modal run run_modal.py --config-file-list-str=/root/ai-toolkit/config/whatever_you_want.yml`.
- You can monitor your training in your local terminal, or on [modal.com](https://modal.com/).
- Models, samples and optimizer will be stored in `Storage > flux-lora-models`.
### 6. Saving the model
- Check contents of the volume by running `modal volume ls flux-lora-models`.
- Download the content by running `modal volume get flux-lora-models your-model-name`.
- Example: `modal volume get flux-lora-models my_first_flux_lora_v1`.
### Screenshot from Modal
---
## Dataset Preparation
Datasets generally need to be a folder containing images and associated text files. Currently, the only supported
formats are jpg, jpeg, and png. Webp currently has issues. The text files should be named the same as the images
but with a `.txt` extension. For example `image2.jpg` and `image2.txt`. The text file should contain only the caption.
You can add the word `[trigger]` in the caption file and if you have `trigger_word` in your config, it will be automatically
replaced.
Images are never upscaled but they are downscaled and placed in buckets for batching. **You do not need to crop/resize your images**.
The loader will automatically resize them and can handle varying aspect ratios.
## Training Specific Layers
To train specific layers with LoRA, you can use the `only_if_contains` network kwargs. For instance, if you want to train only the 2 layers
used by The Last Ben, [mentioned in this post](https://x.com/__TheBen/status/1829554120270987740), you can adjust your
network kwargs like so:
```yaml
network:
type: "lora"
linear: 128
linear_alpha: 128
network_kwargs:
only_if_contains:
- "transformer.single_transformer_blocks.7.proj_out"
- "transformer.single_transformer_blocks.20.proj_out"
```
The naming conventions of the layers are in diffusers format, so checking the state dict of a model will reveal
the suffix of the name of the layers you want to train. You can also use this method to only train specific groups of weights.
For instance to only train the `single_transformer` for FLUX.1, you can use the following:
```yaml
network:
type: "lora"
linear: 128
linear_alpha: 128
network_kwargs:
only_if_contains:
- "transformer.single_transformer_blocks."
```
You can also exclude layers by their names by using `ignore_if_contains` network kwarg. So to exclude all the single transformer blocks,
```yaml
network:
type: "lora"
linear: 128
linear_alpha: 128
network_kwargs:
ignore_if_contains:
- "transformer.single_transformer_blocks."
```
`ignore_if_contains` takes priority over `only_if_contains`. So if a weight is covered by both,
if will be ignored.
## LoKr Training
To learn more about LoKr, read more about it at [KohakuBlueleaf/LyCORIS](https://github.com/KohakuBlueleaf/LyCORIS/blob/main/docs/Guidelines.md). To train a LoKr model, you can adjust the network type in the config file like so:
```yaml
network:
type: "lokr"
lokr_full_rank: true
lokr_factor: 8
```
Everything else should work the same including layer targeting.
## Updates
Only larger updates are listed here. There are usually smaller daily updated that are omitted.
### Jul 17, 2025
- Make it easy to add control images to the samples in the ui
### Jul 11, 2025
- Added better video config settings to the UI for video models.
- Added Wan I2V training to the UI
### June 29, 2025
- Fixed issue where Kontext forced sizes on sampling
### June 26, 2025
- Added support for FLUX.1 Kontext training
- added support for instruction dataset training
### June 25, 2025
- Added support for OmniGen2 training
-
### June 17, 2025
- Performance optimizations for batch preparation
- Added some docs via a popup for items in the simple ui explaining what settings do. Still a WIP
### June 16, 2025
- Hide control images in the UI when viewing datasets
- WIP on mean flow loss
### June 12, 2025
- Fixed issue that resulted in blank captions in the dataloader
### June 10, 2025
- Decided to keep track up updates in the readme
- Added support for SDXL in the UI
- Added support for SD 1.5 in the UI
- Fixed UI Wan 2.1 14b name bug
- Added support for for conv training in the UI for models that support it