One is a desktop app that runs models for you. The other is a web interface you host for a whole household or team. Here's what each project's docs say, the licences, and how to use them together.
"Open WebUI vs LM Studio" is the top comparison people search for Open WebUI, and it's a slightly apples-to-oranges question. That's exactly why it's worth answering. One is a program you install and use on your own machine. The other is a website you run for yourself and others. Here's the difference from each project's own documentation, and how to decide.
A web app you host vs a desktop app you install: same local models, different jobs. · Illustration generated with Higgsfield
What each one is
Open WebUI vs LM Studio, from their docs
Open WebUI
v0.11.4 · self-hosted web UI
vs
LM Studio
Desktop app · macOS / Windows / Linux
A web interface you host (pip, uv, Docker, Kubernetes)
What it is
A desktop app that downloads and runs models
No: connects to Ollama or OpenAI-compatible APIs
Runs models itself?
Yes, via llama.cpp (docs)
Yes: RBAC, groups, LDAP/SSO
Multiple users
Single-user app. Serves an API on the network.
Any browser on your network (PWA on mobile)
Access from other devices
Via its local/network API, not a shared chat UI
Server-first by design
Headless / server use
"llmster", LM Studio's headless version
Open WebUI License (BSD-style + branding clause)
Licence
Proprietary: personal and/or internal business use
WebUI wins 2wins 1 Studio
LM Studio's docs say it "is available for macOS, Windows, and Linux," runs LLMs "using llama.cpp," and can "serve local models on OpenAI-like endpoints, locally and on the network." A headless version, llmster, runs "no desktop app required." Its terms grant "a non-exclusive, non-transferable license to use the Software solely for Your personal and / or internal business purposes." Open WebUI's README describes "a self-hosted AI platform" with "support for Ollama and OpenAI-compatible APIs," and install "via pip, uv, Docker, or Kubernetes."
Which one you want
You, one computer, want it simple: LM Studio. One app finds, downloads and runs the model, and gives you a chat window.
You want a household or team to share one GPU: Open WebUI in front of Ollama. Everyone gets their own login in a browser, and you control who can use which models.
You want to chat from your phone or laptop while the model runs on a desktop: Open WebUI. It's a web app, so any device on your network can open it.
You like LM Studio's model handling but want a shared web UI: use both. Open WebUI's README lists LM Studio among the OpenAI-compatible endpoints you can point it at.
Licensing matters to you: neither is MIT. LM Studio's terms limit use to personal or internal business purposes. Open WebUI restricts removing its branding above 50 users (see the Open WebUI licence, explained).
They do different jobs. LM Studio is a desktop app that runs models itself for one user. Open WebUI is a self-hosted web interface, usually over Ollama, built for multiple users and devices. You can also run both, with Open WebUI connected to LM Studio's OpenAI-compatible API.
Can Open WebUI use LM Studio?
Yes. Open WebUI's README says you can point its API URL at LM Studio (among other OpenAI-compatible endpoints), and LM Studio's docs say it serves models on OpenAI-like endpoints locally and on the network.
Is LM Studio free?
LM Studio's app terms grant a non-exclusive, non-transferable licence to use it for personal and/or internal business purposes. It's proprietary software, not open source.
Do I need Ollama for Open WebUI?
Not strictly. Open WebUI supports Ollama and OpenAI-compatible APIs, so it can use LM Studio, vLLM or a cloud provider instead. Ollama is the most common local pairing, and there are Docker images with Ollama bundled.