CORE vs Semantic Scholar (2026): which should you pick?
As of Nov 13, 2026, we pick Semantic Scholar: it is third in our ranking of AI research tools, and they share a 3.2 GPA.
Checked Oct 5, 2026 and Nov 13, 2026 · graded Oct 10, 2026 and Nov 13, 2026 by ToolGPA
They get the same grade on all five counts.
Price, platforms and features side by side. The table says where each price was read and when.
Semantic Scholar
Free AI-powered search engine for scientific literature
Which one is for you
Pick CORE if
- Fits if you want free full-text open access papers and no paywalls
- Works for developers who want a free research API
Look elsewhere if
- Skip it if you need paywalled papers, as it covers open access content only
- Tight if you run heavy API use, as free use is rate limited and faster rates are typically paid, with no price published
- Watch out: dataset access for text mining is a benefit of the top Sustaining membership
- Skip it if you want AI summaries or chat, as none are listed
Pick Semantic Scholar if
- Fits if you want free literature search across every field of science
- Works for developers who need open scholarly data through an API
Look elsewhere if
- Not for you if you want to question any paper, since Ask This Paper works on a limited set of them
- Tight if you work outside computer science and the biomedical fields, where papers get no TLDR
- Skip it if you want a phone app, as there isn't one and you use the mobile site
- Watch out: Semantic Reader is still a beta and mostly covers arXiv papers
- Tight if you build on the API: a key starts at 1 request per second, and keyless calls share one pool
How we grade them
| 3.2GPACOREVery good | 3.2GPASemantic ScholarVery good | |
|---|---|---|
| Value for money | AFree search and a free API, from a not-for-profit, with no paid plan for individuals. | AEntirely free, with no paid plans, built by the nonprofit Ai2. Paid plans in this category start at $10 and mostly land around $12 a month, and this costs nothing. |
| Free plan and trial | ASearch and the API are free, with no registration, within rate limits that a normal person is unlikely to reach. | AYou can search and read papers without an account. A free account adds a library, email alerts, Research Feeds and author page claiming. There are no paid plans, so nothing is held back. The one cap is on API calls: a key starts at 1 request per second. |
| Features | COpen access search, an API, a recommender, datasets and repository tools. It holds open access papers only, and dataset access for text mining is a top membership benefit. | CMore than 200 million papers with filters for venue, author, type and date, a flag on highly influential citations, and feeds that recommend from what you've saved. The gaps are on its own pages: TLDRs only cover computer science, biology and medicine, and Semantic Reader is a beta, mostly arXiv. |
| Ease of use | BNo store rating on record, but you search and read open papers with nothing to set up. The API is for developers. | BNo store rating on record, so B is the ceiling. There's nothing to set up: type a search, filter and read, with no account needed to start. |
| Platforms and integrations | BWeb and an API, with PubMed Central and Iris.ai. No desktop or phone app is listed. | BWeb and a browser extension, with links to Zotero, Mendeley and LibKey and an Academic Graph API where most endpoints work without a key. There's no phone app: the FAQ says to use the site in a mobile browser. |
| Best for | searching open access research with a free API | free search across the scientific literature |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: CORE and Semantic Scholar. How we grade
Price against what you get
CORE has no paid plan and scores 2.7 out of 4 on features, ease of use and platforms. Semantic Scholar has no paid plan and scores 2.7.
On this chart the two sit in the same place: the same score for the same starting price. Of the other AI research tools on the chart, none scores higher than CORE for less, and none scores higher than Semantic Scholar for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
- Semantic Scholar also covers citations.
At a glance
| CORE | Semantic Scholar | |
|---|---|---|
| Pricing | Free | Free |
| Starts at | Free | Free |
| Free plan | Free search and a free API with no registration, within CORE's rate limits. | Entirely free, with no paid plans. Papers can be read without an account; a free account adds a library, email alerts, Research Feeds and author page claiming. |
| Free trial | None listed | None listed |
| Web | ||
| Browser extension | ||
| Made by | Knowledge Media Institute, The Open University | Allen Institute for AI (Ai2) |
| Price read from | core.ac.uk | semanticscholar.org |
| Checked | Nov 13, 2026 | Oct 5, 2026 |
Worth knowing
CORE
- Free API use is rate limited; faster rates for organizations are typically paid, with no price published.
- Dataset access for text mining is a benefit of the top Sustaining membership level.
- It covers open access content only, so paywalled papers are not available.
Semantic Scholar
- There is no smartphone app; the FAQ says the site is designed to be used in mobile browsers.
- TLDR summaries are limited to papers in computer science and the biomedical fields.
- Semantic Reader is in beta and covers mostly arXiv papers, and Ask This Paper works on a limited set of papers.
- Unauthenticated API calls share one pool of 1,000 requests per second; an API key starts at 1 request per second.
Key features
CORE
- Open access search
- One search across metadata and full texts from repositories and journals, over 400 million records according to the About page.
- API
- Real-time machine access to metadata and full texts, usable for commercial purposes under the terms and documented with examples.
- Recommender and Discovery
- Listed under content discovery services, alongside FreshFinds; the Recommender suggests related papers across the repository network.
- Dataset and FastSync
- Listed under access to raw data: a dataset of the corpus for text and data mining, and a FastSync service, beyond the API.
- Repository tools
- A dashboard, OAI identifier resolver and FAIR certification help repositories manage how their content appears.
Semantic Scholar
- Paper search with TLDR summaries
- Searches papers with filters for venue, author, publication type and date. TLDRs are very short AI summaries, available for nearly 60 million papers in computer science, biology and medicine.
- Highly Influential Citations
- A machine-learning model flags the citations where the cited paper had a significant effect on the citing one, so a long citation list has a starting point.
- Library and Research Feeds
- Save papers into folders, share public folders and bulk export citations. Turning on a Research Feed for a folder brings paper recommendations based on its contents.
- Paper and author alerts
- Email alerts report new citations of a chosen paper, or new papers and citations for an author you follow.
- Semantic Reader
- A beta reading view for most arXiv papers, with in-line citation cards, a table of contents, AI skimming highlights and on-demand definitions of terms.
- Academic Graph API and datasets
- A REST API for papers, authors, citations, venues and recommendations, plus downloadable datasets. Most endpoints work without a key.
Plans
CORE
Free$0
Search and API access within published rate limits; registering organizations get a faster rate that is typically not free.
Semantic Scholar
Free$0
Search, TLDR summaries, Semantic Reader, a paper library, alerts and Research Feeds, plus rate-limited API access.
Ways to pay less
CORE
- Other savings
30-day free trial for institutions
CORE says it offers a 30-day free trial of the API for Institution and Enterprise users, subject to eligibility checks at registration.
Semantic Scholar
No public discounts listed.
Common questions
Which is cheaper, CORE or Semantic Scholar?
As of Nov 13, 2026, both CORE and Semantic Scholar are free to use.
Which has a free plan, CORE or Semantic Scholar?
As of Nov 13, 2026, both CORE and Semantic Scholar have a free plan.
Which platforms do CORE and Semantic Scholar run on?
As of Nov 13, 2026, only Semantic Scholar lists a browser extension. Both list a web app. A platform missing from a listing is one its maker's pages did not mention.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.