Product / UX / UI & API

LM Studio

Desktop app (Windows/macOS/Linux) for discovering, downloading, and running local LLMs with a polished chat GUI, model browser, an OpenAI-compatible local server, headless mode, and native Apple MLX support. The smoothest local-LLM onboarding - but the app itself is closed-source.

Desktop app is proprietary freeware ('free for home and work use'; ToS forbids modification/reverse-engineering/redistribution). Only the CLI (lms) and JS/Python SDKs are MIT. Score 1 (not 0) because the SDK/CLI source is public.

Openness

1 high confidence

1.0

license: Proprietary
source: closed
app: proprietary-freeware(ToS forbids modify/reverse-engineer/redistribute)
sdk+cli: MIT(public)
core-engine: closed

Core app/engine is closed proprietary freeware; only peripheral CLI/SDKs are open.

https://lmstudio.ai/app-terms recorded 2026-06-17
ToS: no modification/reverse-engineering/redistribution

Adoption

3 medium confidence

3.0

Widely-used consumer app but no primary-verified install count; conservative level 3.

https://lmstudio.ai/ recorded 2026-06-17
product positioning, free for home and work use

Capability

4 medium confidence

4.0

Strong UX/polish on par with the open local UIs; loses on openness/extensibility (closed source).

https://lmstudio.ai/ recorded 2026-06-17
feature set: chat UI, model browser, local server, MLX

Unchanged since 2026-07-30 (last edited, not re-checked)