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Phi Browser vs BrowserOS: catalog facts
Phi Browser	BrowserOS
Free A free download; the homepage mentions no paid plans.	Free Free and open source.
macOS	Windows, macOS, Linux
Native macOS interface on the Chromium engine Built-in AI assistant with persistent memory	Built-in AI agents that act on web pages Can use local models instead of a cloud service
Apple Silicon Macs with macOS 14 or newer only Proactive AI features may not suit users who prefer a plain browser	Agent features are new and still changing quickly Local models need capable hardware to run well
Downloadable app	Downloadable app
Closed source	Open source
License not stated	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 2, 2026	Official website Full listing and sources Checked September 24, 2026

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