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pytorch-lightning
Python

pytorch-lightning

Pretrain, finetune ANY AI model of ANY size on 1 or 10,000+ GPUs with zero code changes.

by Lightning-AI · GitHub
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aiartificial-intelligencedata-scienceApache-2.0Python
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In plain words

Train and improve any AI model easily, even on many computers at once, without changing your code.

From the README

Install
pip install lightning
Documentation ↗

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31.24k31.21k
2026-06-272026-08-31
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📄 About

Pretrain, finetune ANY AI model of ANY size on 1 or 10,000+ GPUs with zero code changes.

pytorch-lightning has 31.2k stars on GitHub. It has been forked 3.8k times. pytorch-lightning is written mainly in Python. It has been in active development since 2019. pytorch-lightning is available under the Apache-2.0 license. Its main topics are ai, artificial-intelligence, data-science, deep-learning.

Frequently asked questions

What is pytorch-lightning?

Pretrain, finetune ANY AI model of ANY size on 1 or 10,000+ GPUs with zero code changes.

Is pytorch-lightning open source?

pytorch-lightning is an open-source project. It is released under the Apache-2.0 license.

Is pytorch-lightning free?

Yes. pytorch-lightning is free and open source — you can use, modify and self-host it.

What license does pytorch-lightning use?

pytorch-lightning is available under the Apache-2.0 license.

What language is pytorch-lightning written in?

pytorch-lightning is written mainly in Python.

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