Compare · checked 2026-10-15 / 2026-10-15

Open WebUI vs LM Studio.

Open WebUI: Closes the UX gap with frontier chat apps: multi-model chat, RAG over documents, user accounts. LM Studio: Point-and-click model management with an OpenAI-compatible local server; good for comparing GGUF vs MLX builds of the same model on a Mac.

From the site's runbooks. Speed is not compared: we have not benchmarked them yet.
	Open WebUI	LM Studio
What it is	A self-hosted, ChatGPT-style interface for Ollama and any OpenAI-compatible endpoint.	Desktop app for discovering and running local models, plus the lms CLI and a local server.
Licence	Open WebUI License (includes a requirement to preserve 'Open WebUI' branding; see LICENSE and LICENSE_HISTORY)	lms CLI: MIT (LM Studio desktop app is proprietary freeware)
Runs on	Mac (Apple chip), Linux, Windows	Mac (Apple chip), Linux, Windows
Install (Mac)	`brew install python@3.11`	`brew install --cask lm-studio`
Check it works	`curl -sI http://localhost:8080 \| head -1`	`lms status`
GitHub stars	155,901	5,352
Last push	2026-10-16	2026-10-14
Works with	ollama, llama-cpp, mlx-lm, lm-studio, litellm	open-webui, litellm, aider
Kit says	This is what makes a local stack feel like a product: chat history, model picker, documents, the works.	The friendliest GUI in the directory. The app itself isn't open source, but the lms CLI is, and that's what I'd script.

Open WebUI · watch out

Default pip port 8080 collides with mlx_lm.server and llama.cpp's server defaults.

LM Studio · watch out

Desktop app is not open source; only the CLI repo is.

Open WebUI setup LM Studio setup Open WebUI alternatives LM Studio alternatives More comparisons

Questions

Short answers.

What is the difference between Open WebUI and LM Studio?: Open WebUI: A self-hosted, ChatGPT-style interface for Ollama and any OpenAI-compatible endpoint. LM Studio: Desktop app for discovering and running local models, plus the lms CLI and a local server.
Which should I pick, Open WebUI or LM Studio?: Open WebUI: Closes the UX gap with frontier chat apps: multi-model chat, RAG over documents, user accounts. LM Studio: Point-and-click model management with an OpenAI-compatible local server; good for comparing GGUF vs MLX builds of the same model on a Mac.
Are Open WebUI and LM Studio free and open source?: Open WebUI: Open WebUI License (includes a requirement to preserve 'Open WebUI' branding; see LICENSE and LICENSE_HISTORY). LM Studio: lms CLI: MIT (LM Studio desktop app is proprietary freeware).

Facts from each tool's docs and repo, checked 2026-10-15 and 2026-10-15. Stars checked on the listing date.

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# Open WebUI vs LM Studio

URL: https://insidethemachine.ai/compare/open-webui-vs-lm-studio
Facts from the site's runbooks (checked 2026-10-15 / 2026-10-15). No speed claims: we have not benchmarked them on the Mac Studio yet.

## Open WebUI

A self-hosted, ChatGPT-style interface for Ollama and any OpenAI-compatible endpoint.

- Best for: Closes the UX gap with frontier chat apps: multi-model chat, RAG over documents, user accounts.
- Kit says: This is what makes a local stack feel like a product: chat history, model picker, documents, the works.
- Licence: Open WebUI License (includes a requirement to preserve 'Open WebUI' branding; see LICENSE and LICENSE_HISTORY)
- Runs on: Mac (Apple chip), Linux, Windows
- Install (Mac): `brew install python@3.11`
- Check it works: `curl -sI http://localhost:8080 | head -1`
- GitHub stars: 155,901 (last push 2026-10-16)
- Works with: ollama, llama-cpp, mlx-lm, lm-studio, litellm
- Caveats: Default pip port 8080 collides with mlx_lm.server and llama.cpp's server defaults.
- Runbook: https://insidethemachine.ai/setups/open-webui.md · https://openwebui.com/

## LM Studio

Desktop app for discovering and running local models, plus the lms CLI and a local server.

- Best for: Point-and-click model management with an OpenAI-compatible local server; good for comparing GGUF vs MLX builds of the same model on a Mac.
- Kit says: The friendliest GUI in the directory. The app itself isn't open source, but the lms CLI is, and that's what I'd script.
- Licence: lms CLI: MIT (LM Studio desktop app is proprietary freeware)
- Runs on: Mac (Apple chip), Linux, Windows
- Install (Mac): `brew install --cask lm-studio`
- Check it works: `lms status`
- GitHub stars: 5,352 (last push 2026-10-14)
- Works with: open-webui, litellm, aider
- Caveats: Desktop app is not open source; only the CLI repo is.
- Runbook: https://insidethemachine.ai/setups/lm-studio.md · https://lmstudio.ai/

## Questions

**What is the difference between Open WebUI and LM Studio?**
Open WebUI: A self-hosted, ChatGPT-style interface for Ollama and any OpenAI-compatible endpoint. LM Studio: Desktop app for discovering and running local models, plus the lms CLI and a local server.

**Which should I pick, Open WebUI or LM Studio?**
Open WebUI: Closes the UX gap with frontier chat apps: multi-model chat, RAG over documents, user accounts. LM Studio: Point-and-click model management with an OpenAI-compatible local server; good for comparing GGUF vs MLX builds of the same model on a Mac.

**Are Open WebUI and LM Studio free and open source?**
Open WebUI: Open WebUI License (includes a requirement to preserve 'Open WebUI' branding; see LICENSE and LICENSE_HISTORY). LM Studio: lms CLI: MIT (LM Studio desktop app is proprietary freeware).