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Avidnote vs OpenRead: catalog facts
Avidnote	OpenRead
Freemium Sign-up is free to start, with paid plans listed on its pricing page.	Freemium Free tier available, with a paid Pro plan.
Web	Web
Paper and notes shown side by side Ask questions, summarize and proofread uploaded documents	Search across more than 300 million papers Compare several papers to spot agreements and contradictions
Web only, with documents uploaded to the service AI-generated text needs careful checking before academic use	Web only, no desktop app Advanced features sit behind the Pro plan
Web application	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 26, 2026

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