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LLM fine-tuning tools
8 libraries and platforms for fine-tuning language models. Open-source libraries and platforms for fine-tuning and post-training language models on your own data. Compare GPU requirements, supported models and training methods.
How to read this page. The tools are grouped by category and are not ranked. Pricing labels come from vendors' own pages when we could confirm them. Always verify plans and limits on the vendor's site.
LLM APIs & Model Providers (2)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| Lightning AI | Cloud platform for building, training and serving AI models, from the PyTorch Lightning team. | See site | Official site |
| Together AI | Cloud for running, fine-tuning and deploying open-source models. | See site | Official site |
AI Developer Tools (6)
| Tool | What it does | Pricing | Link |
|---|---|---|---|
| Axolotl | Open-source tool for fine-tuning language models. | Free | Official site |
| Kiln | Free desktop app for building AI tasks, synthetic datasets, evals and fine-tunes. | Free | Official site |
| LlamaFactory | Open-source toolkit with a web UI for fine-tuning 100+ LLMs and vision-language models. | Free | Official site |
| Oumi | Open platform for building, training and improving specialized AI models and agents. | Free | Official site |
| TRL | Hugging Face library for post-training LLMs with SFT, DPO and RL. | Free | Official site |
| Unsloth | Open-source library for faster, lower-memory fine-tuning of language models. | See site | Official site |