Lightning-AI

    Lightning-AI/litgpt

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

    13.8K stars
    1.5K forks
    13.8K GitHub watchers
    Updated Nov 5, 2026
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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    No releases in the last 90 days; the most recent was 129 days ago, with 134 contributors on GitHub.

    Use Cases & Benefits

    • Provides implementations and recipes to pretrain, finetune, and deploy over 20 high-performance large language models (LLMs) at scale.
    • Delivers no-abstraction, from-scratch LLM implementations optimized for speed, memory efficiency, and enterprise-scale training and inference.
    • Use for fine-tuning pretrained LLMs on custom datasets to specialize models for domain-specific NLP tasks.
    • Use for pretraining or continued pretraining of LLMs on large or custom text corpora to build foundational language models.
    • Use for deploying LLMs as scalable inference APIs with optimized performance on GPUs or TPUs for real-time applications.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    Apache 2.0

    Permissive: commercial use, modification and redistribution are allowed with attribution; includes an explicit patent grant from contributors.

    Community files

    • README: present
    • Contributing guide: present
    • Code of conduct: present

    Watch-outs

    No watch-outs from GStars' checks.

    General guidance from repository metadata, not legal advice. How we score

    From the README

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

    Over 340,000 developers use Lightning Cloud - purpose-built for PyTorch and PyTorch Lightning.

    Every LLM is implemented from scratch with no abstractions and full control, making them blazing fast, minimal, and performant at enterprise scale.

    ✅ Enterprise ready - Apache 2.0 for unlimited enterprise use. ✅ Developer friendly - Easy debugging with no abstraction layers and single file implementations. ✅ Optimized performance - Models designed to maximize performance, reduce costs, and speed up training. ✅ Proven recipes - Highly-optimized training/finetuning recipes tested at enterprise scale.

    Excerpt from the Lightning-AI/litgpt README on GitHub (Apache-2.0 license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Forks

    1.5K+61

    Open issues

    332+60

    Compared with peers in AI

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

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