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ChatGPTBox vs MaxAI: catalog facts
ChatGPTBox	MaxAI
Free Free and open source; model providers may charge for API use.	Freemium Free to install, with paid plans on the pricing page.
Browser extension	Web, Browser extension
Works on any web page Open source with an active community	Works on the current page from a sidebar Access to several AI model providers
Needs access to a model provider such as ChatGPT or an API Repository moved, so older links point to the previous owner	Page content is sent to cloud AI services No Firefox extension listed
Browser extension	Web application, Browser extension
Open source	Closed 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	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 1, 2026

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