Skip to content
@Lightning-AI

⚡️ Lightning AI

Turn ideas into AI, Lightning fast. Creators of PyTorch Lightning, Lightning AI Studio, TorchMetrics, Fabric, Lit-GPT, Lit-LLaMA
README.md

Welcome to Lightning AI ⚡

The all-in-one platform for AI development. Code together. Prototype. Train. Scale. Serve. From your browser - with zero setup. From the creators of PyTorch Lightning.

Pinned Loading

  1. pytorch-lightning pytorch-lightning Public

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

    Python 30.6k 3.6k

  2. torchmetrics torchmetrics Public

    Machine learning metrics for distributed, scalable PyTorch applications.

    Python 2.4k 467

  3. litgpt litgpt Public

    20+ high-performance LLMs with recipes to pretrain, finetune and deploy at scale.

    Python 13k 1.4k

  4. LitServe LitServe Public

    Build custom inference engines for models, agents, multi-modal systems, RAG, pipelines and more.

    Python 3.7k 260

  5. litData litData Public

    Speed up model training by fixing data loading.

    Python 565 81

  6. lightning-thunder lightning-thunder Public

    PyTorch compiler that accelerates training and inference. Get built-in optimizations for performance, memory, parallelism, and easily write your own.

    Python 1.4k 110

Repositories

Showing 10 of 24 repositories
  • LitModels Public

    Save, load, host, and share AI model checkpoints without slowing down training. Host on Lightning AI or your own cloud with enterprise-grade access controls.

    Lightning-AI/LitModels’s past year of commit activity
    Python 39 Apache-2.0 7 2 (1 issue needs help) 5 Updated Dec 16, 2025
  • lightning-thunder Public

    PyTorch compiler that accelerates training and inference. Get built-in optimizations for performance, memory, parallelism, and easily write your own.

    Lightning-AI/lightning-thunder’s past year of commit activity
    Python 1,431 Apache-2.0 110 419 (8 issues need help) 66 Updated Dec 15, 2025
  • LitServe Public

    Build custom inference engines for models, agents, multi-modal systems, RAG, pipelines and more.

    Lightning-AI/LitServe’s past year of commit activity
    Python 3,735 Apache-2.0 260 22 (5 issues need help) 3 Updated Dec 15, 2025
  • pytorch-lightning Public

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

    Lightning-AI/pytorch-lightning’s past year of commit activity
    Python 30,581 Apache-2.0 3,622 816 (126 issues need help) 104 Updated Dec 15, 2025
  • utilities Public

    Common Python utilities and GitHub Actions in Lightning Ecosystem

    Lightning-AI/utilities’s past year of commit activity
    Python 62 Apache-2.0 21 1 (1 issue needs help) 10 Updated Dec 16, 2025
  • litData Public

    Speed up model training by fixing data loading.

    Lightning-AI/litData’s past year of commit activity
    Python 565 Apache-2.0 81 37 (22 issues need help) 12 Updated Dec 15, 2025
  • litgpt Public

    20+ high-performance LLMs with recipes to pretrain, finetune and deploy at scale.

    Lightning-AI/litgpt’s past year of commit activity
    Python 13,027 Apache-2.0 1,379 230 (53 issues need help) 16 Updated Dec 15, 2025
  • torchmetrics Public

    Machine learning metrics for distributed, scalable PyTorch applications.

    Lightning-AI/torchmetrics’s past year of commit activity
    Python 2,377 Apache-2.0 467 84 (36 issues need help) 40 Updated Dec 15, 2025
  • litAI Public

    LLM router + minimal agent framework in one. Call any LLM API with OpenAI format. Unified billing, tools, retries, fallback, logging. Build agents and AI apps in pure Python. Full control. Zero magic.

    Lightning-AI/litAI’s past year of commit activity
    Python 34 Apache-2.0 9 0 2 Updated Dec 1, 2025
  • tutorials Public archive

    Collection of Pytorch lightning tutorial form as rich scripts automatically transformed to ipython notebooks.

    Lightning-AI/tutorials’s past year of commit activity
    Python 318 Apache-2.0 80 12 (9 issues need help) 3 Updated Aug 4, 2025
View all repositories