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Semantic Scholar vs The Lens: catalog facts
Semantic Scholar	The Lens
Free Free to use in the browser.	Freemium Free to search, with paid subscriptions offered for some features.
Web, Browser extension	Web
Index of more than 238 million papers across all fields of science Free to search without cost	Patents and scholarly works in one search Built-in charts and analysis of results
Semantic Reader is in beta and only available for select papers Web only, with no offline use	Analysis of very large result sets can time out Some features require a subscription
Web application, Browser extension	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 23, 2026	Official website Full listing and sources Checked September 26, 2026

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