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CORE vs PubMed: catalog facts
CORE	PubMed
Free Searching is free; CORE is a not-for-profit service with additional offerings for…	Free Free to use, run by a US government agency.
Web	Web
Very large collection of open access papers Full text as well as metadata	Over 40 million biomedical citations in one place Advanced search, clinical queries and MeSH browsing
Limited to open access content Search only; no AI summaries described in the research	Mostly citations and abstracts; full text depends on PubMed Central or publishers Limited to biomedical and life-sciences subjects
Web application	Web application
Closed source	Closed source
License not stated	License not stated
No account needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

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