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

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