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Airtop vs Nanobrowser: catalog facts
Airtop	Nanobrowser
Freemium Free to try; the research does not list paid plan prices.	Free Free and open source; you pay your chosen LLM provider for API usage.
Web	Browser extension
Automations described in plain English Compiled agents run on schedules with lower model costs	Runs inside your own browser Bring your own LLM API key
Hosted service aimed at business workflows Pricing details not given in the research	Needs a paid API key from a model provider Chrome-focused
Hosted service	Browser extension
Closed source	Open source
License not stated	License not stated
Account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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