Compare software

OpenReadSemantic Scholar
Freemium

Free tier available, with a paid Pro plan.

 Free

Free to use in the browser.

Web Web, Browser extension
  • Search across more than 300 million papers
  • Compare several papers to spot agreements and contradictions
  • Index of more than 238 million papers across all fields of science
  • Free to search without cost
  • Web only, no desktop app
  • Advanced features sit behind the Pro plan
  • 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

Checked September 26, 2026

Checked September 23, 2026

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