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Top 23 Python fine-tuning Projects
- Project mention: Llama-Factory: Unified, Efficient Fine-Tuning for 100 Open LLMs | news.ycombinator.com | 2025-09-18
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Stream
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unsloth
Fine-tuning & Reinforcement Learning for LLMs. 🦥 Train OpenAI gpt-oss, DeepSeek-R1, Qwen3, Gemma 3, TTS 2x faster with 70% less VRAM.
Project mention: Unsloth – Train LLMs 2x faster with 70% less VRAM | news.ycombinator.com | 2025-12-10 - Project mention: How to Build a RAG Solution with Llama Index, ChromaDB, and Ollama | dev.to | 2025-11-04
Step 2: Set up LlamaIndex and Chroma DB
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CosyVoice
Multi-lingual large voice generation model, providing inference, training and deployment full-stack ability.
Project mention: CosyVoice 2025 Complete Guide: The Ultimate Multi-lingual Text-to-Speech Solution | dev.to | 2025-12-15git clone --recursive https://github.com/FunAudioLLM/CosyVoice.git cd CosyVoice # If submodule cloning fails due to network issues git submodule update --init --recursive
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OpenLLM
Run any open-source LLMs, such as DeepSeek and Llama, as OpenAI compatible API endpoint in the cloud.
Project mention: Your 2025 Roadmap to Becoming an AI Engineer for Free for Vue.js Developers | dev.to | 2025-08-06REST APIs to connect AI models to Vue.js apps (example 1, example 2).
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h2o-llmstudio
H2O LLM Studio - a framework and no-code GUI for fine-tuning LLMs. Documentation: https://docs.h2o.ai/h2o-llmstudio/
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
- Project mention: DeepFabric – Generate High-Quality Synthetic Datasets at Scale | news.ycombinator.com | 2025-09-26
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cognita
RAG (Retrieval Augmented Generation) Framework for building modular, open source applications for production by TrueFoundry
Project mention: Lists of open-source frameworks for building RAG applications | dev.to | 2025-01-02Ideal For: Enterprises seeking a robust framework for large-scale AI applications. GitHub Repository
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- Project mention: OML 1.0 via Fingerprinting: Open, Monetizable, and Loyal AI | news.ycombinator.com | 2025-07-07
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xTuring
Build, personalize and control your own LLMs. From data pre-processing to fine-tuning, xTuring provides an easy way to personalize open-source LLMs. Join our discord community: https://discord.gg/TgHXuSJEk6
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Just use https://github.com/bghira/SimpleTuner
I was able to run this script to train a Lora myself without spending any time learning the underlying python libraries.
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maestro
streamline the fine-tuning process for multimodal models: PaliGemma 2, Florence-2, and Qwen2.5-VL (by roboflow)
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dstack
dstack is an open-source control plane for running development, training, and inference jobs on GPUs—across hyperscalers, neoclouds, or on-prem.
Project mention: Orchestrating GPUs in data centers and private clouds | news.ycombinator.com | 2025-02-18Super excited to hear any feedback.
[1] https://github.com/dstackai/dstack/issues/2184
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custom-diffusion
Custom Diffusion: Multi-Concept Customization of Text-to-Image Diffusion (CVPR 2023)
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DB-GPT-Hub
A repository that contains models, datasets, and fine-tuning techniques for DB-GPT, with the purpose of enhancing model performance in Text-to-SQL
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I thought this was pretty well known (at least in the JAX/XLA world). I've hit this many times and got batch variance explained to me before: https://github.com/google-deepmind/penzai/issues/82 and
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- Project mention: Curator: Scalable data pre processing and curation toolkit for LLMs | news.ycombinator.com | 2025-08-20
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LLM-Adapters
Code for our EMNLP 2023 Paper: "LLM-Adapters: An Adapter Family for Parameter-Efficient Fine-Tuning of Large Language Models"
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).
Python fine-tuning discussion
Python fine-tuning related posts
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Unsloth – Train LLMs 2x faster with 70% less VRAM
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DeepFabric – Generate High-Quality Synthetic Datasets at Scale
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Llama-Factory: Unified, Efficient Fine-Tuning for 100 Open LLMs
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Defeating Nondeterminism in LLM Inference
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Show HN: Kiln – AI Boilerplate with Evals, Fine-Tuning, Synthetic Data, and Git
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Qwen3-235B-A22B-Thinking-2507
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One Input, Multiple AI Minds: Meet the New MultiMindSDK LLM Router
- A note from our sponsor - Stream getstream.io | 24 Dec 2025
Index
What are some of the best open-source fine-tuning projects in Python? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | LLaMA-Factory | 64,310 |
| 2 | unsloth | 49,610 |
| 3 | llama_index | 45,989 |
| 4 | CosyVoice | 18,177 |
| 5 | OpenLLM | 12,013 |
| 6 | ludwig | 11,636 |
| 7 | h2o-llmstudio | 4,757 |
| 8 | Kiln | 4,485 |
| 9 | cognita | 4,303 |
| 10 | lorax | 3,569 |
| 11 | OML-1.0-Fingerprinting | 3,533 |
| 12 | xTuring | 2,664 |
| 13 | SimpleTuner | 2,673 |
| 14 | OneTrainer | 2,649 |
| 15 | maestro | 2,647 |
| 16 | YiVal | 2,114 |
| 17 | dstack | 1,982 |
| 18 | custom-diffusion | 1,969 |
| 19 | DB-GPT-Hub | 1,947 |
| 20 | penzai | 1,830 |
| 21 | LongWriter | 1,792 |
| 22 | Curator | 1,285 |
| 23 | LLM-Adapters | 1,217 |
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