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Semantic ScholarOpenRead
Free

Free to use in the browser.

 Freemium

Free tier available, with a paid Pro plan.

Web, Browser extension Web
  • Index of more than 238 million papers across all fields of science
  • Free to search without cost
  • Search across more than 300 million papers
  • Compare several papers to spot agreements and contradictions
  • Semantic Reader is in beta and only available for select papers
  • Web only, with no offline use
  • Web only, no desktop app
  • Advanced features sit behind the Pro plan
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

Checked September 23, 2026

Checked September 26, 2026

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