LM Studio

LM Studio

A desktop app for running open models, no command line needed.

Running models from a desktop GUI

Visit Site Read the Docs

GitHub Stars

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Contributors

—

PyPI / Month

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Maintained by: LM Studio
First released: May 2023
Last commit: —
Language: Mixed
License: Proprietary

Strengths

A real graphical app, so no terminal or Python setup required.
Built-in model browser and chat make it easy to start.
Local server exposes an OpenAI-compatible API when you are ready to build.

Trade-offs

Closed source, unlike the other engines here.
A desktop tool first, so it is not meant for large-scale serving.

Key Features

What the engine gives you out of the box, in plain language.

OpenAI-Compatible API
NVIDIA GPU
AMD GPU
Apple Silicon
CPU Inference
Quantization
Continuous Batching
Multi-GPU
Desktop GUI
One-Line Install
Structured Output
Streaming

Desktop chat interface
Download and chat with models through a clean app, no setup beyond installing.
Model browser
Search and pull models, with guidance on what fits your machine.
Local API server
Flip on an OpenAI-compatible endpoint to connect your own apps.

Where It Shines

The jobs this engine is best suited for.

Non-engineers running models
Let anyone on the team try open models without touching a terminal.
Quick local testing
Compare models in a chat window before wiring anything into code.
Local API during development
Turn on the server and point your app at a local endpoint.

Side-by-Side

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Add a second or third engine and see stars, downloads, and capabilities lined up next to each other.

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Frequently Asked Questions

What Is an Inference Engine?

An inference engine is the software that runs a language model and turns your prompt into tokens. It loads the model weights, manages memory on your GPU or CPU, and serves the output, usually behind an API.

Is LM Studio open source?

LM Studio ships under the Proprietary license. The source code lives on GitHub, so you can read it, fork it, and run it on your own hardware if your team prefers self-hosting.

Which language is LM Studio built in?

LM Studio is primarily a Mixed project. The implementation language matters less than the hardware it supports and the throughput it delivers, but it does affect how easily your team can extend or debug it.

Free Monthly Report

The AI Build Report

The state of AI models, API prices, and what to run where. New every month, free.

LM Studio

A desktop app for running open models, no command line needed.

Running models from a desktop GUI

Visit Site Read the Docs

GitHub Stars

—

Contributors

—

PyPI / Month

—

Maintained by: LM Studio
First released: May 2023
Last commit: —
Language: Mixed
License: Proprietary

Strengths

A real graphical app, so no terminal or Python setup required.
Built-in model browser and chat make it easy to start.
Local server exposes an OpenAI-compatible API when you are ready to build.

Trade-offs

Closed source, unlike the other engines here.
A desktop tool first, so it is not meant for large-scale serving.

Key Features

What the engine gives you out of the box, in plain language.

OpenAI-Compatible API
NVIDIA GPU
AMD GPU
Apple Silicon
CPU Inference
Quantization
Continuous Batching
Multi-GPU
Desktop GUI
One-Line Install
Structured Output
Streaming

Desktop chat interface
Download and chat with models through a clean app, no setup beyond installing.
Model browser
Search and pull models, with guidance on what fits your machine.
Local API server
Flip on an OpenAI-compatible endpoint to connect your own apps.

Where It Shines

The jobs this engine is best suited for.

Non-engineers running models
Let anyone on the team try open models without touching a terminal.
Quick local testing
Compare models in a chat window before wiring anything into code.
Local API during development
Turn on the server and point your app at a local endpoint.

Side-by-Side

Compare LM Studio With Another Engine

Add a second or third engine and see stars, downloads, and capabilities lined up next to each other.

Open the Comparator

Frequently Asked Questions

What Is an Inference Engine?

Is LM Studio open source?

LM Studio ships under the Proprietary license. The source code lives on GitHub, so you can read it, fork it, and run it on your own hardware if your team prefers self-hosting.

Which language is LM Studio built in?

Free Monthly Report

The AI Build Report

The state of AI models, API prices, and what to run where. New every month, free.

Strengths

Trade-offs

Key Features

Desktop chat interface

Model browser

Local API server

Where It Shines

Non-engineers running models

Quick local testing

Local API during development

Compare LM Studio With Another Engine

Frequently Asked Questions

What Is an Inference Engine?

Is LM Studio open source?

Which language is LM Studio built in?

The AI Build Report

LM Studio

Strengths

Trade-offs

Key Features

Desktop chat interface

Model browser

Local API server

Where It Shines

Non-engineers running models

Quick local testing

Local API during development

Compare LM Studio With Another Engine

Frequently Asked Questions

What Is an Inference Engine?

Is LM Studio open source?

Which language is LM Studio built in?

The AI Build Report