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llamafactory

Fine-tuning toolkit for 100+ LLMs with a CLI and Gradio web UI

Stars
75.4k
License
Apache-2.0
Last commit
Oct 2026
Last release
May 2026
Language
Python

Checked on GitHub.

Overview

LlamaFactory fine-tunes language and multimodal models through YAML-configured CLI runs or the LLaMA Board Gradio UI. It covers pre-training, SFT, reward modeling, PPO, DPO, KTO and ORPO, with full-tuning, freeze-tuning, LoRA and 2 to 8-bit QLoRA. Trained models can be served through an OpenAI-style API using vLLM or SGLang workers.

Who it is for: Engineers fine-tuning open LLMs on their own GPUs, with or without code

Strengths

  • Broad method coverage: SFT, PPO, DPO, KTO, ORPO, LoRA, QLoRA via AQLM/AWQ/GPTQ/HQQ/EETQ
  • Supports GaLore, BAdam, APOLLO, Muon, DoRA, PiSSA, plus Unsloth and Liger Kernel speedups
  • Covers multimodal and audio models such as Qwen3-VL, LLaVA and Qwen2-Audio
  • Runs on NVIDIA, AMD ROCm and Ascend NPU, with hosted Colab and PAI-DSW notebooks

Weaknesses

  • Official documentation is marked WIP in the README
  • No VRAM or RAM figures in the visible README; hardware requirements unknown here
  • Web UI is for training and chat, not a production serving layer
  • Many optional backends (vLLM, SGLang, Unsloth, KTransformers) add install complexity

What it needs

  • GPU required
  • Docker + Compose
  • Needs PyTorch, Hugging Face Transformers, Gradio, vLLM (optional), SGLang (optional)
  • Models: LLaMA, LLaVA, Mistral, Mixtral-MoE, Qwen3

Head to head

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