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Connected Papers vs Semantic Scholar: catalog facts
Connected Papers	Semantic Scholar
Freemium Usable in the browser; check the site for current plan limits.	Free Free to use in the browser.
Web	Web, Browser extension
Visual graph of related papers instead of a plain result list Helps discover related work from a single starting paper	Index of more than 238 million papers across all fields of science Free to search without cost
Web only, needs an internet connection Plan limits are not described on the homepage	Semantic Reader is in beta and only available for select papers Web only, with no offline use
Web application	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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