---

Parameter-Efficient Fine-Tuning Made Easy

PEFT-Factory is a fork of LLaMA-Factory ❤️, enhanced with an easy-to-use PEFT interface, support for HuggingFace PEFT methods, and curated datasets for benchmarking PEFT approaches.

📄 System Demonstration Paper  |  🎥 Demo Video  |  🏛️ EACL 2026

🏆 PEFT-Factory was presented at EACL 2026 (19th Conference of the European Chapter of the Association for Computational Linguistics, Rabat, Morocco) as a System Demonstration.

---

Supported Methods

PEFT Method	Supported	Backend
LoRA (including variants)	✅	🦙 LLaMA-Factory
OFT	✅	🦙 LLaMA-Factory
Prefix Tuning	✅	🤗 HuggingFace PEFT
Prompt Tuning	✅	🤗 HuggingFace PEFT
P-Tuning	✅	🤗 HuggingFace PEFT
P-Tuning v2	✅	🤗 HuggingFace PEFT
MPT	✅	🤗 HuggingFace PEFT
IA³	✅	🤗 HuggingFace PEFT
LNTuning	✅	🤗 HuggingFace PEFT
Bottleneck Adapter	✅	🤖 AdapterHub
Parallel Adapter	✅	🤖 AdapterHub
SeqBottleneck Adapter	✅	🤖 AdapterHub
SVFT	✅	⚙️ Custom
BitFit	✅	⚙️ Custom

---

Usage

This section provides instructions on how to install PEFT-Factory, download the necessary data and methods, and run training using either the command line or the web UI.

Quickstart

For a video walkthrough, visit the PEFT-Factory Demonstration Video.

# Install the package
pip install peftfactory

# Download the repository, which contains data, PEFT methods, and examples
git clone https://github.com/kinit-sk/PEFT-Factory.git && cd PEFT-Factory

# Start the web UI
pf webui

Alternatively, you can run training directly from the command line:

# Install the package
pip install peftfactory

# Download the repository, which contains data, PEFT methods, and examples
git clone https://github.com/kinit-sk/PEFT-Factory.git && cd PEFT-Factory

Set Environment Variables for envsubst

Define the variables that will be substituted into the training config template:

TIMESTAMP=`date +%s`
OUTPUT_DIR="saves/bitfit/llama-3.2-1b-instruct/train_wsc_${TIMESTAMP}"
DATASET="wsc"
SEED=123
WANDB_PROJECT="peft-factory-train-bitfit"
WANDB_NAME="bitfit_llama-3.2-1b-instruct_train_wsc"

mkdir -p "${OUTPUT_DIR}"

export OUTPUT_DIR DATASET SEED WANDB_PROJECT WANDB_NAME

Apply the Config Template

The envsubst utility replaces occurrences of environment variables in the template file with their current values:

envsubst < examples/peft/bitfit/llama-3.2-1b-instruct/train.yaml > ${OUTPUT_DIR}/train.yaml

Run Training

peftfactory-cli train ${OUTPUT_DIR}/train.yaml

---

Installation

PEFT-Factory can be installed in several ways: directly from PyPI for the latest release, or built from source for the development version.

From PyPI (Recommended)

pip install peftfactory

From Source

1. Clone the repository:

git clone git@github.com:kinit-sk/PEFT-Factory.git

2. Build the wheel package:

make build

3. Install with pip:

pip install dist/[name of the built package].whl

Installing DeepSpeed

DeepSpeed is required for evaluation and computation of the PSCP metric.

pip install deepspeed

Note: You may encounter an error about the CUDA_HOME environment variable not being set. The fix depends on your environment:

Conda

conda install -c nvidia cuda-compiler

Standard virtualenv / pyenv

You will need to install CUDA with the nvcc compiler at the OS level. Instructions vary by operating system — consult your distribution's documentation. For example, on Arch Linux:

# Arch Linux example — the exact command differs per OS
sudo pacman -S cuda

---

Data and Methods

To download the datasets, PEFT method implementations, and example configs for training, clone the repository from GitHub:

git clone https://github.com/kinit-sk/PEFT-Factory.git && cd PEFT-Factory

---

Running Training

From the Command Line

pf train [path to config file].yaml

Using the Web UI

pf webui

---

Citation

If you use PEFT-Factory in your research, please cite our EACL 2026 System Demonstration paper:

@inproceedings{belanec-etal-2026-peft-factory,
    title = "{PEFT}-Factory: Unified Parameter-Efficient Fine-Tuning of Autoregressive Large Language Models",
    author = "Belanec, Robert  and
      Srba, Ivan  and
      Bielikova, Maria",
    editor = "Croce, Danilo  and
      Leidner, Jochen  and
      Moosavi, Nafise Sadat",
    booktitle = "Proceedings of the 19th Conference of the {E}uropean Chapter of the {A}ssociation for {C}omputational {L}inguistics (Volume 3: System Demonstrations)",
    month = mar,
    year = "2026",
    address = "Rabat, Morocco",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2026.eacl-demo.15/",
    doi = "10.18653/v1/2026.eacl-demo.15",
    pages = "188--202",
    ISBN = "979-8-89176-382-1",
    abstract = "Parameter-Efficient Fine-Tuning (PEFT) methods address the increasing size of Large Language Models (LLMs). Currently, many newly introduced PEFT methods are challenging to replicate, deploy, or compare with one another. To address this, we introduce PEFT-Factory, a unified framework for efficient fine-tuning LLMs using both off-the-shelf and custom PEFT methods. While its modular design supports extensibility, it natively provides a representative set of 19 PEFT methods, 27 classification and text generation datasets addressing 12 tasks, and both standard and PEFT-specific evaluation metrics. As a result, PEFT-Factory provides a ready-to-use, controlled, and stable environment, improving replicability and benchmarking of PEFT methods. PEFT-Factory is a downstream framework that originates from the popular LLaMA-Factory, and is publicly available at https://github.com/kinit-sk/PEFT-Factory."
}