Open source for data and AI

749 projects · 100 relicensed

pytorch-lightning license, foundation and stars

ML frameworks · Apache 2.0 (open source) · 31,443 stars

GitHub

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

License history

LICENSE file

Apache 2.0 No license change recorded since the repository was created in 2019.

Latest release

No GitHub releases published; the project releases elsewhere (tags or its own site).

About and history
Repository
Lightning-AI/pytorch-lightning · created Mar 31, 2019
Website
lightning.ai/pytorch-lightning/?utm_source=ptl_readme&utm_medium=referral&utm_campaign=ptl_readme
Language
Python
Foundation
None; run by its maintainers
GitHub detects
Apache-2.0
Stars per week
14 (GitHub weekly snapshots)

Weekly snapshots

Week ofStars
Nov 2, 202631,443
Oct 26, 202631,433
Oct 12, 202631,413
Oct 5, 202631,390
Sep 21, 202631,360

Changes

Stars per weekNov 5, 2026

Gains about 14 stars a week, down from 15.

Stars per weekOct 26, 2026

Gains about 15 stars a week, down from 18.

Stars per weekOct 17, 2026

Gains about 18 stars a week, up from 15.

Stars per weekOct 8, 2026

Gains about 15 stars a week.

TrackedSep 25, 2026

Now tracked, from Lightning-AI/pytorch-lightning on GitHub.