OpenAlex
RECENTLY LAUNCHED
Latest screenshot: 2024-07-23
Access to search interface:
open
Last major interface update:
2024-01-12
Owner of search system:
OurResearch
Location of system headquarters:
Sanford, US
Year of launch:
2023
Type:
Search engine
Help URL:
Twitter:
Description of search system (by system owner)
OpenAlex is a free and open catalog of the world's scholarly papers, researchers, journals, and institutions — along with all the ways they're connected to one another.
Notes
OpenAlex has passed the Alpha release, yet its interface and data structure still update regularly.
Total coverage:
248.20M
Year-over-year growth (2022-2023):
-2.20%
Subject coverage:
Multidisciplinary
Retrospective coverage:
1800–2024
Record types:
15
Open Access records:
52.86M / 21.30%
Search functionality and interface
Systematic keyword searching:
limited
Backward citation searching:
sufficient
Forward citation searching:
sufficient
Query builder:
Search history:
Match preview:
Sorting options:
8
Query
Latency with short query:
0.9 seconds
Latency with long query:
3.15 seconds
Controlled vocabulary:
Field codes:
8
Full text search:
Search string length (narrow):
250 terms max.
Search string length (wide):
100 terms max.
Language support: Chinese:
Language support: Cyrillic:
Truncation:
Wildcards:
Keyword position irrelevant:
Longer strings, fewer hits:
Automatic query expansion (stemming):
Verbatim queries:
Reproducible queries (time):
Reproducible queries (locations):
Operators
Search operators:
3
Boolean 'OR':
Boolean 'AND':
Boolean 'NOT':
Proximity operator:
Boolean works exact:
Nested search (parentheses):
Citation search / filtering
Record type filters:
15
Results filters:
34
Suggested related records:
Supported by bibliometric tools:
VOSviewer
Backward citation information:
Backward citation score:
68.90%
Forward citation information:
Forward citation score:
68.30%
Retrieval
Number of accessible records:
1000
Bulk select records:
Bulk export records:
100000
Export formats:
2
API:
open
Bulk select records' backward citations:
Bulk export backward citations:
0
Bulk select records' forward citations:
Bulk export forward citations:
99999
