Coverage
The Keenious index
Statistics for the Keenious search index, a curated subset of the OpenAlex catalogue. Data as of 12 October 2026.
Publications
177,001,946 publications by publication year, field, language and publication type.
Publications by year
5M publications from before 1950 are not shown. Counts for the current year are incomplete.
Publications by field
From the OpenAlex topic classification, which assigns each publication one primary topic.
- Medicine32.3M 18.2%
- Engineering26M 14.7%
- Social Sciences22M 12.4%
- Computer Science10.1M 5.7%
- Arts and Humanities9.9M 5.6%
- Biochemistry, Genetics and Molecular Biology9.6M 5.4%
- Agricultural and Biological Sciences8.6M 4.9%
- Physics and Astronomy7.6M 4.3%
- Environmental Science7.5M 4.2%
- Materials Science5.4M 3.0%
- Psychology4.6M 2.6%
- Business, Management and Accounting4.5M 2.5%
Publications by language
- English135.9M 76.8%
- Spanish7.6M 4.3%
- French5.1M 2.9%
- German4.3M 2.5%
- Portuguese3.6M 2.0%
- Indonesian3.1M 1.8%
- Russian2.5M 1.4%
- Japanese2.3M 1.3%
- Chinese2.2M 1.3%
- Other languages2M 1.1%
- Korean1.7M 0.97%
- Italian1.5M 0.85%
Publications by type
- Articles153.1M 86.5%
- Conference papers14.2M 8.0%
- Preprints5M 2.8%
- Books3.7M 2.1%
- Reviews978.6K 0.55%
Record completeness
Share of publications with each metadata field present in the OpenAlex record.
- DOI70.8%
- Abstract62.0%
- Reference list47.7%
- Cited by at least one publication in the index50.9%
- Author affiliation58.0%
- Funder15.9%
- PubMed ID21.5%
- Licence21.1%
- PDF link25.9%
Open access
Open access status from OpenAlex, which uses Unpaywall data. Search results link to the open access copy where one exists.
71,963,825 of 177,001,946 publications are open access.
Publications by open access status
- Gold6.0% · 10.6MPublished in a fully open access journal
- Diamond9.6% · 17MPublished in a fully open access journal without article processing charges
- Hybrid4.3% · 7.6MPublished under an open licence in a subscription journal
- Bronze6.2% · 10.9MFree to read on the publisher site, without an open licence
- Green14.5% · 25.8MPaywalled at the publisher, open access copy in a repository
- Closed59.3% · 105MNo open access copy found by OpenAlex
Share of publications that are open access, by year
Share of publications that are open access, by field
- Mathematics55.7%
- Dentistry48.7%
- Agricultural and Biological Sciences47.8%
- Business, Management and Accounting47.4%
- Social Sciences46.2%
- Economics, Econometrics and Finance46.1%
- Decision Sciences45.3%
- Immunology and Microbiology44.6%
- Environmental Science44.4%
- Psychology43.9%
Peer review
Peer review status is derived from the Norwegian Scientific Index, maintained by the Norwegian Directorate for Higher Education and Skills (HK-dir). Publications in venues on level 1 or 2 are marked as peer reviewed. Level 1 requires external peer review.
77,541,119 of 177,001,946 publications are in level 1 or 2 venues.
Publications by venue level in the Norwegian Scientific Index
- Level 210.9% · 19.2MHighest level
- Level 133.0% · 58.3MApproved as scientific. Requires external peer review
- Level 03.9% · 6.9MAssessed and not approved as scientific
- Not in the register52.3% · 92.6MNot assessed by the register, including repositories and preprint servers
Venues in the register: 29.5K of 189.6K. Publications in level 0 venues and in venues outside the register have peer review status unknown.
Share of publications in level 1 or 2 venues, by year
Share of publications in level 1 or 2 venues, by field
- Neuroscience65.8%
- Chemistry64.8%
- Materials Science64.3%
- Chemical Engineering64.3%
- Biochemistry, Genetics and Molecular Biology61.3%
- Immunology and Microbiology60.5%
- Energy54.6%
- Mathematics54.1%
- Medicine53.4%
- Earth and Planetary Sciences53.1%
Authors, venues and institutions
Authors, venues and institutions with at least one publication in the index.
Authors
Authors with an ORCID iD: 15.1%.
Authors by number of publications
- 1 publication36.3M 51.0%
- 2 to 925.9M 36.4%
- 10 to 998.2M 11.5%
- 100 to 999770.5K 1.1%
- 1000 or more5.8K 0.01%
Venues
Venues in the Directory of Open Access Journals: 21,700 (11.4%).
Venues by type
- Journal159.1K 83.9%
- Ebook platform16.6K 8.7%
- Conference5.9K 3.1%
- Book series5.3K 2.8%
- Repository2.7K 1.4%
- Other104 0.05%
Venues by Norwegian Scientific Index level
- Level 22.2K 1.2%
- Level 122.4K 11.8%
- Level 04.9K 2.6%
Institutions
Institutions by type
- Company29.7K 24.1%
- Education29.3K 23.7%
- Nonprofit15.5K 12.6%
- Healthcare15.1K 12.2%
- Facility14.8K 12.0%
- Government8.7K 7.0%
- Other7.2K 5.8%
- Archive2.6K 2.1%
- Funder621 0.50%
Institutions by country
- United States28.4K 23.0%
- Japan9.4K 7.6%
- China7.2K 5.9%
- United Kingdom6.9K 5.6%
- France5.7K 4.6%
- Germany5.1K 4.1%
- India4.1K 3.4%
- Canada3.5K 2.9%
Curation and updates
The index excludes other record types, retracted works, journal front matter, duplicates, incomplete records and venues that publish mostly non-research content. It is updated weekly from OpenAlex.
OpenAlex records
- In the Keenious index177,001,946 (37.9%)
- Excluded290,296,873 (62.1%)
The OpenAlex total includes 138.4M records in its expansion corpus, mostly datasets and repository records. 12.6M of these are in the Keenious index.