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A high-performance AI pipeline engine - build LLM workflows as portable .pipe files
★ 17.8k スターMIT
ガイドを見る →litgptは、Lightning-AIが公開しているオープンソースの開発ツールプロジェクトです（GitHub: Lightning-AI/litgpt）。GitHubスターは13,695、フォークは1,516で、Apache-2.0ライセンスの下で公開されています。GitHubでの最終更新は2026年10月7日です。
20+ high-performance LLMs implemented from scratch, with proven recipes to pretrain, finetune and deploy.
Pick from 20+ supported LLMs and decide whether you are chatting, fine-tuning, pretraining, evaluating or serving.
Install the package with the extra dependencies bundle from PyPI, or clone the repo for a source install.
Use the CLI or the Python API - weights download automatically for supported models (some gated models need a Hugging Face token).
Fine-tune on your JSON dataset with a proven recipe, chat with the result to test it, then serve it as an API.
Every LLM is implemented from scratch with no abstractions, making the code easy to read, debug and modify.
Llama 2/3, Code Llama, Gemma 2/3, Phi, Qwen2.5/Qwen3, Mistral/Mixtral, Falcon, Pythia, OLMo, DeepSeek R1 distills and more, listed via litgpt download list.
Pretrain, continued pretrain, finetune, evaluate (for example MMLU and TruthfulQA), chat and serve, all through one litgpt command interface.
LoRA, QLoRA, Adapter and Adapter v2 recipes, plus YAML configuration files for reproducible, out-of-the-box performance.
Flash Attention v2, FSDP multi-GPU support, optional CPU offloading, TPU/XLA support, and FP16/BF16 plus 4-bit and 8-bit quantization to cut memory.
litgpt serve turns a pretrained or fine-tuned checkpoint into a web server you can query over HTTP.
Clone LitGPT for a source install; PyPI users can skip the clone.
git clone https://github.com/Lightning-AI/litgpt.git
cd litgptInstall the package with its extra dependencies from PyPI.
pip install 'litgpt[extra]'Download and chat with a model in one command - weights are fetched automatically.
litgpt chat microsoft/phi-2LitGPT is developed by Lightning AI, the company behind PyTorch Lightning, with open-source contributors.
Yes. It is Apache-2.0 licensed, which the project highlights as allowing unlimited enterprise use. Model weights you download carry their own licenses.
No. Everything runs on your own GPUs; some gated Hugging Face models require a free access token to download.
Transformers is a broad modeling library and ms-swift a ModelScope training framework; LitGPT focuses on a curated set of from-scratch, hackable implementations with proven end-to-end recipes in one CLI.
Run pip install 'litgpt[extra]', then litgpt chat microsoft/phi-2 to talk to a model in minutes.
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LibreAIカタログに掲載された開発ツールプロジェクトの中で最もスターの多いもの — litgptが合わなかった場合に検討したい、現実的な候補リストです。
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