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MaxAI vs ChatGPTBox: catalog facts
MaxAI	ChatGPTBox
Freemium Free to install, with paid plans on the pricing page.	Free Free and open source; model providers may charge for API use.
Web, Browser extension	Browser extension
Works on the current page from a sidebar Access to several AI model providers	Works on any web page Open source with an active community
Page content is sent to cloud AI services No Firefox extension listed	Needs access to a model provider such as ChatGPT or an API Repository moved, so older links point to the previous owner
Web application, Browser extension	Browser extension
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Not stated if it works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 2, 2026

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