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UI-TARS Desktop vs Magentic-UI: catalog facts
UI-TARS Desktop	Magentic-UI
Free Free and open source; model hosting or API costs may apply.	Free Free and open source; model usage may cost money depending on the provider you configure.
Windows, macOS	Self-hosted
Controls the desktop through visual understanding of the screen Open source with an active, widely followed repository	Agent works across both the browser and local files Designed to run with smaller models
Needs access to a capable vision model Giving an agent control of your computer carries risk	Experimental research project Requires setting up Python and a model configuration
Downloadable app	Self-hosted
Open source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.