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