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OpenAlex
What it is
OpenAlex is an open catalog of scholarly research, with a REST API connecting works, authors, sources, institutions, topics, and other entities. API queries can search, filter, sort, group, page results, select fields, and retrieve individual records. The complete database snapshot is free to download from Amazon S3 without an AWS account, and its data is released under the CC0 public-domain license. An official CLI supports bulk downloads with parallel transfers, checkpoints, rate limits, retries, and resume. Full-text access provides PDFs and machine-readable TEI XML, with each file download priced at $0.01. Website exports include CSV, RIS for EndNote or Zotero, and TXT; VOSviewer connects through the API. OpenAlex also provides Unpaywall as a legacy-format open-access API, with a browser extension and integrations including SFX, EBSCO Discovery Service, and 360 Link. Its multidisciplinary coverage includes journal articles, conference papers, books, book chapters, datasets, dissertations, and preprints. The service is operated by a US 501(c)(3) nonprofit, and its code is open source. OpenAlex advises users to escape externally sourced text fields and follow OWASP XSS-prevention practices.
For and against
For
- Free snapshot download without an AWS account
- CC0 public-domain data
- API supports search and filtering
- Exports include CSV, RIS, and TXT
Against
- Full-text file downloads cost $0.01 each
- Externally sourced text fields are not sanitized
The verdict
OpenAlex provides several ways to query, download, and export multidisciplinary research records. Users handling external text fields should account for the stated output-sanitization guidance.
Who it suits
It suits researchers and developers who need to search or work with scholarly records through an API, downloadable snapshot, or exports. Its coverage spans multiple research formats and disciplines.
Plans and prices
Free
No payment method · API key · suitable for most research and personal projects
Read 15 Oct 2026 · help.openalex.org
Pay as you go
Adds usage after free daily budget is exhausted
Read 15 Oct 2026 · help.openalex.org
Member
$20/day API budget · admin dashboard · advisory-board nominations · quarterly supporter meetings
Read 15 Oct 2026 · help.openalex.org
Member+
$100/day API budget · daily database snapshot and changed-since filters · critical API bug support · all Member benefits
Read 15 Oct 2026 · help.openalex.org
Partner
$200+/day API budget · full ticket support · three academic/government power users · five consulting hours/year
Read 15 Oct 2026 · help.openalex.org
On the record
- Advanced search
- Advanced search adds proximity matching, exact matching, wildcards and queries up to about 8 KB.blog.openalex.org · read 15 Oct 2026
- AI connector limits
- The connector cannot bulk-export result sets, fetch PDFs, calculate total citations across a work set or edit profiles other than the connected user's own.help.openalex.org · read 15 Oct 2026
- AI integration
- The OpenAlex MCP connector works in Claude web, desktop, mobile and Claude Code, while compatibility with other MCP clients is possible through Streamable HTTP and OAuth.help.openalex.org · read 15 Oct 2026
- API
- The REST API exposes entity endpoints with filtering, searching, sorting, grouping, pagination, field selection and single-record lookup.help.openalex.org · read 15 Oct 2026
- API authentication
- Basic API queries work without a key, while a free verified key raises the daily budget tenfold and is required for cursor paging beyond the first page.help.openalex.org · read 15 Oct 2026
- API pricing
- The published usage rates are $0 for single-record lookups, $0.0001 per list or filter call, $0.001 per search call and $0.01 per PDF or XML download.blog.openalex.org · read 15 Oct 2026
- CLI
- The official CLI installs with pip, supports parallel downloads, checkpointing, adaptive rate limiting, DOI resolution and PDF or TEI XML retrieval.help.openalex.org · read 15 Oct 2026
- CLI limitation
- The CLI is still in progress and currently focuses on work metadata and content downloads; CSV export and other entity types are planned.help.openalex.org · read 15 Oct 2026
- Company size
- LinkedIn lists OpenAlex as a nonprofit research-services organization with 2–10 employees.linkedin.com · read 15 Oct 2026
- Data licence
- OpenAlex data is released under CC0, except the MAG-format snapshot, which uses ODC-BY.github.com · read 15 Oct 2026
- Data license
- OpenAlex data is released under the CC0 public-domain license.help.openalex.org · read 30 Sep 2026
- Full text
- The full-text service provides PDFs and machine-readable TEI XML, with per-file downloads priced at $0.01 each.help.openalex.org · read 30 Sep 2026
- Full-text archive
- OpenAlex provides cached PDF and machine-readable TEI XML links for more than 50 million open-access works through its content API.help.openalex.org · read 15 Oct 2026
- Funding
- OurResearch announced a $7.5 million, five-year Arcadia grant on 13 March 2024 to establish OpenAlex as sustainable open infrastructure.blog.openalex.org · read 15 Oct 2026
- Independent API assessment
- Singapore Management University notes that the API links authors, works, venues, institutions and concepts through separate endpoints and exposes fields such as retraction and open-access status.library.smu.edu.sg · read 15 Oct 2026
- Independent comparison
- CASRAI characterizes OpenAlex as globally scoped and nonprofit maintained, with more coverage than Scopus or Web of Science but less precision about which institutional output belongs to an institution.casrai.org · read 15 Oct 2026
- Independent description
- Singapore Management University describes OpenAlex as a free open-source index aggregating and standardizing data from MAG, Crossref, ORCID, Unpaywall and repositories.library.smu.edu.sg · read 15 Oct 2026
- Independent evidence-synthesis limit
- A Norwegian Institute of Public Health evaluation found OpenAlex useful for identifying many relevant studies but concluded that adding it to traditional searches did not save time or resources.fhi.no · read 15 Oct 2026
