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alphaXivSciSpace
Free

The homepage lists no prices; signing up adds following and discussion.

 Freemium

Free sign-up, with paid plans for more usage and enterprise options.

Web, Browser extension Web
  • Trending papers with summaries and discussion
  • Follow specific authors and organizations
  • Search across more than 280 million papers
  • Chat with PDF to explain difficult papers
  • Focused on arXiv papers
  • Discussion features require an account
  • AI summaries of papers still need checking against the source
  • Full features require a paid plan
Web application, Browser extension Web application
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Needs internet Needs internet

Checked October 1, 2026

Checked September 23, 2026

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