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alphaXiv vs OpenRead: catalog facts
alphaXiv	OpenRead
Free The homepage lists no prices; signing up adds following and discussion.	Freemium Free tier available, with a paid Pro plan.
Web, Browser extension	Web
Trending papers with summaries and discussion Follow specific authors and organizations	Search across more than 300 million papers Compare several papers to spot agreements and contradictions
Focused on arXiv papers Discussion features require an account	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
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.