Run LM Studio as a service (headless)

LM Studio can be run as a background service without the GUI. There are two ways to do this:

• llmster (recommended) — a standalone daemon, no GUI required
• Desktop app in headless mode — hide the UI and run the desktop app as a service

Option 1: llmster (recommended)

llmster is the core of the LM Studio desktop app, packaged to be server-native, without reliance on the GUI. It can run on Linux boxes, cloud servers, GPU rigs, or your local machine without the GUI. See the LM Studio 0.4.0 release post for more details.

Install llmster

Linux / Mac

curl -fsSL https://lmstudio.ai/install.sh | bash

Windows

irm https://lmstudio.ai/install.ps1 | iex

Start llmster

lms daemon up

See the daemon CLI docs for full reference.

For setting up llmster as a startup task on Linux, see Linux Startup Task.

Option 2: Desktop app in headless mode

This works on Mac, Windows, and Linux machines with a graphical user interface. It's useful if you already have the desktop app installed and want it to run as a background service.

Run the LLM service on machine login

Head to app settings (Cmd / Ctrl + ,) and check the box to run the LLM server on login.

When this setting is enabled, exiting the app will minimize it to the system tray, and the LLM server will continue to run in the background.

Auto Server Start

Your last server state will be saved and restored on app or service launch.

To achieve this programmatically:

lms server start

Just-In-Time (JIT) model loading for REST endpoints

Applies to both options. Useful when using LM Studio as an LLM service with other frontends or applications.

When JIT loading is ON:

• Calls to OpenAI-compatible /v1/models will return all downloaded models, not only the ones loaded into memory
• Calls to inference endpoints will load the model into memory if it's not already loaded

When JIT loading is OFF:

• Calls to OpenAI-compatible /v1/models will return only the models loaded into memory
• You have to first load the model into memory before being able to use it

What about auto unloading?

JIT loaded models will be auto-unloaded from memory by default after a set period of inactivity (learn more).

Community

Chat with other LM Studio developers, discuss LLMs, hardware, and more on the LM Studio Discord server.

Please report bugs and issues in the lmstudio-bug-tracker GitHub repository.