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Metaso AI Search vs Sogou Search: catalog facts
Metaso AI Search	Sogou Search
Free The homepage says it is free to use.	Free Free to use, supported by advertising.
Web	Web
No ads in search results Structured answers instead of a list of links	Searches WeChat official account articles Dedicated Zhihu, dictionary and translation search
Interface in Chinese only Few details on sources and data handling on the homepage	Interface only in Chinese Queries capped at 100 Chinese characters
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is 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 October 2, 2026

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