Source: https://seerepo.com/compare/Lightning-AI/pytorch-lightning/vs/mudler/LocalAI
Markdown source: https://seerepo.com/compare/Lightning-AI/pytorch-lightning/vs/mudler/LocalAI.md
Description: pytorch-lightning and LocalAI share 4 technologies: FastAPI, torch, Lightning, and jinja2. pytorch-lightning is written in Python and LocalAI in Go.

# pytorch-lightning vs LocalAI

pytorch-lightning and LocalAI share 4 technologies: FastAPI, torch, Lightning, and jinja2. pytorch-lightning is written in Python and LocalAI in Go.

- [Lightning-AI/pytorch-lightning](https://seerepo.com/r/Lightning-AI/pytorch-lightning): Pretrain, finetune ANY AI model of ANY size on 1 or 10,000+ GPUs with zero code changes.
- [mudler/LocalAI](https://seerepo.com/r/mudler/LocalAI): LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.

## What they share and what sets them apart

- In common: FastAPI, torch, Lightning, jinja2
- Only in pytorch-lightning: docutils, myst-parser, nbconvert, pandoc
- Only in LocalAI: React, net/http, Echo, pyarrow, s3, NATS.io, Postgres, github.com/glebarez/sqlite, SQLite, MCP, Hugging Face, OpenAI, anyio, uvicorn, Tokio, react-router-dom, Vite, Gradio, matplotlib, gorm.io/gorm, github.com/nats-io/jwt/v2, github.com/nats-io/nkeys, golang.org/x/oauth2, github.com/aws/aws-sdk-go-v2/credentials, github.com/coreos/go-oidc/v3, accelerate, bitsandbytes, conformer, coqui-tts, einops, flash-attn, llama-cpp-python, llvmlite, Model Context Protocol, ModelScope, ONNX, onnxruntime-gpu, openai-go, phonemizer, s3tokenizer, scikit-image, sentencepiece, spacy-pkuseg, tiktoken, torchao, torchvision, vector-quantize-pytorch, transformers, diffusers, mlx, opencv-python, insightface, mlx-lm, torchaudio, vLLM, librosa, onnxruntime, sglang, datasets, faster-whisper, funasr, kokoro, mlx-audio, optimum, peft, QWen, rerankers, safetensors, sentence-transformers, tokenizers, trl, whisperx, av, sox, torchcodec, github.com/go-audio/wav, pillow, github.com/charmbracelet/glamour, github.com/dhowden/tag, github.com/microcosm-cc/bluemonday, golang.org/x/image, imageio, imageio-ffmpeg, loguru, go.opentelemetry.io/otel/metric, OpenTelemetry, Docker, tracing, github.com/aws/aws-sdk-go-v2, github.com/aws/aws-sdk-go-v2/config, github.com/Microsoft/hcsshim, go.opentelemetry.io/otel/exporters/prometheus, go.opentelemetry.io/otel/sdk/metric, Prometheus, tracing-subscriber, fontsource-variable, CodeMirror, @lezer/highlight, yaml, dompurify, highlight.js, marked

## Side by side

| | pytorch-lightning | LocalAI |
|---|---|---|
| Size | 138,949 lines written, 271 code files | 1,389,292 lines written, 2,979 code files |
| Who writes it | 0.1% of its commits signed by AI. With GitHub Copilot and Claude Code | 3.7% of its commits signed by AI. With Claude Code, GitHub Copilot, and Cursor |
| Activity | Last push October 30, 2026, 11,034 commits, 31,446 stars | Last push November 5, 2026, 9,317 commits, 50,214 stars |
| Tests | 329 test files. 66.1% of its code files have a test that imports them | 2,911 test files. 60.8% of its code files have a test that imports them |

- Size: Lines written by people and agents, without generated ones; code files, without tests.
- Who writes it: A commit counts as AI's when it carries its signature: a Co-Authored-By line, its author name or the merge of its branch.
- Activity: From GitHub and its history, on the day SeeRepo read it.
- Tests: The files that test the code, and the share of code files a test imports.

## Frequently asked questions

### Which is bigger, pytorch-lightning or LocalAI?

LocalAI, with 1,389,292 lines written; pytorch-lightning has 138,949.

The proof: [mudler/LocalAI's code at commit efc6f93](https://github.com/mudler/LocalAI/tree/efc6f9373ffd35c87cf45e334cdbf7f5f19076f6)

### Which has more GitHub stars, pytorch-lightning or LocalAI?

LocalAI, with 50,214 stars; pytorch-lightning has 31,446.

The proof: [mudler/LocalAI on GitHub](https://github.com/mudler/LocalAI)

### Which has more tests, pytorch-lightning or LocalAI?

LocalAI, with 2,911 test files; pytorch-lightning has 329.

The proof: [mudler/LocalAI's code at commit efc6f93](https://github.com/mudler/LocalAI/tree/efc6f9373ffd35c87cf45e334cdbf7f5f19076f6)

### Which was updated more recently, pytorch-lightning or LocalAI?

LocalAI: its last push was on November 5, 2026, and pytorch-lightning's on October 30, 2026.

The proof: [mudler/LocalAI's commits on GitHub](https://github.com/mudler/LocalAI/commits)

### Which has more commits signed by AI, pytorch-lightning or LocalAI?

LocalAI: an AI signed 3.7% of its commits, with Claude Code, GitHub Copilot, and Cursor; in pytorch-lightning, 0.1%.

The proof: [the commits each tool signed in mudler/LocalAI](https://seerepo.com/r/mudler/LocalAI/ai)

## Sources

- Lightning-AI/pytorch-lightning: Read on November 7, 2026, at commit 84df182 (https://github.com/Lightning-AI/pytorch-lightning/tree/84df182f50ab34301aabb3c0eb4031815bfb413d)
- mudler/LocalAI: Read on November 5, 2026, at commit efc6f93 (https://github.com/mudler/LocalAI/tree/efc6f9373ffd35c87cf45e334cdbf7f5f19076f6)

## What is your repo built with?

Any public repo, with no account: https://seerepo.com/r/owner/repo/built, with the owner and name it has on GitHub.