VerlumoAIAI search assistant that answers questions with cited sources.
View detailsCORE is an aggregator of open-access research papers from repositories worldwide. It indexes over 300 million papers from thousands of repositories and journals, so you can search the world's open research in one place — with full text where available, and links to the original source.
Key Features
- Free search across 300M+ open-access papers
- Full text where available
- Aggregates repositories worldwide
- Free API for developers and institutions
- Related papers and recommendations
- No account needed for basic search
Pricing
| Plan | Price | Details |
|---|---|---|
| Free | $0 | Full search across open-access papers and API access — no payment required. |
Prices as listed in 2026 research. Always check the official site for the latest price — plans change. Free plan: Yes — it has a free plan.
Best for: anyone who searches open-access research papers from repositories worldwide, for free.
Popular with: Students, Teachers, Writers
Popular with: Students, Teachers, Writers
How it works
The platform is free for everyone, with no account needed for basic search. It also offers an API for developers and institutions who want to build on its data, and it powers the search behind many university repositories.
CORE is the best free tool for finding open-access papers. It will not help with paywalled research, and it has no AI features, but for a free, comprehensive search of open research, it is hard to beat.
Pros and Cons
✓ Pros
- Completely free with no account needed
- Huge index of 300M+ open-access papers
- Full text where available
- Free API for developers
✗ Cons
- Open-access only — paywalled papers are not included
- No AI summaries or citation tools
- Interface is simpler than commercial databases
Related Tools
AI research assistant that answers questions from 138M+ academic papers.
View detailsGoogle's source-grounded research assistant — ask your documents, get cited answers.
View detailsLast reviewed: November 2026