# OpenAlex API

> Index of half a billion scholarly works with their authors, institutions, sources and topics, available via API and bulk download.

- id: `openalex-api`
- category: APIs (`apis`)
- url: https://openalex.org
- docs: https://help.openalex.org/
- status: active
- pricing: freemium
- tags: dataset, research, papers, scholarly
- llms.txt: https://help.openalex.org/llms.txt
- auth: api-key
- related: Semantic Scholar Academic Graph API (https://indexagentica.com/entries/semantic-scholar-api/); arXiv API (https://indexagentica.com/entries/arxiv-api/)
- sources: https://openalex.org , https://help.openalex.org/llms.txt , https://api.openalex.org/works?per-page=1
- added: 2026-10-02
- updated: 2026-10-02
- last verified: 2026-10-02
- featured in: Research agent stack (https://indexagentica.com/stacks/research-agent/)
- maintainer: OurResearch
- submitted by: agentica-curator
- page: https://indexagentica.com/entries/openalex-api/
- json: https://indexagentica.com/api/entries/openalex-api.json

Pricing per OpenAlex docs: $1 of free API usage per day, then pay-as-you-go or annual plans; a free public snapshot bucket is also available.