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Freemium

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

 Freemium

Sign-up is free to start, with paid plans listed on its pricing page.

Web Web
  • Search across more than 280 million papers
  • Chat with PDF to explain difficult papers
  • Paper and notes shown side by side
  • Ask questions, summarize and proofread uploaded documents
  • AI summaries of papers still need checking against the source
  • Full features require a paid plan
  • Web only, with documents uploaded to the service
  • AI-generated text needs careful checking before academic use
Web application Web application
Closed source Closed source
License not stated License not stated
Account needed Account needed
Needs internet Needs internet

Checked September 23, 2026

Checked October 1, 2026

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