COVID-19 Open Research Dataset
CORD-19 (the COVID-19 Open Research Dataset) is a freely available corpus of tens of thousands of scholarly articles about COVID-19, SARS-CoV-2, and the broader coronavirus family, assembled by the Allen Institute for AI (AI2) in partnership with the White House Office of Science and Technology Policy (OSTP), the National Library of Medicine (NLM), Microsoft Research, the Chan Zuckerberg Initiative, and others. Each release packaged article metadata, machine-readable full text (parsed from PDFs and PubMed Central XML), and precomputed document embeddings, making the corpus a widely used resource for text mining, information retrieval, and natural language processing during the pandemic. It is an upstream literature source for KG-COVID-19. The dataset is no longer maintained; its final release was issued on 2 June 2022 and AI2 has since sunset the project.
[{"category": "Organization", "contact_details": [{"contact_type": "url", "value": "https://allenai.org/"}], "label": "Allen Institute for AI (AI2)"}]
[{"category": "Dataset", "description": "The CORD-19 corpus, comprising article metadata, machine-readable full text, and precomputed document embeddings. Releases were distributed as compressed archives; historical releases (first 2020-03-13, final 2022-06-02) remain hosted on AWS S3 and are documented in the AI2 repository.", "format": "json", "id": "cord-19.corpus", "name": "CORD-19 corpus", "original_source": [{"relation_type": "prov:hadPrimarySource", "source": "cord-19"}], "product_url": "https://github.com/allenai/cord19"}, {"category": "DataProduct", "description": "AI2 data landing page describing the CORD-19 corpus, its structure, and access to historical releases.", "format": "http", "id": "cord-19.landing", "name": "CORD-19 download / landing page", "original_source": [{"relation_type": "prov:hadPrimarySource", "source": "cord-19"}], "product_url": "https://allenai.org/data/cord-19"}, {"category": "GraphProduct", "description": "KGX nodes and edges for KG-COVID-19", "format": "kgx", "id": "kg-covid-19.graph", "name": "KG-COVID-19 graph", "original_source": [{"relation_type": "prov:hadPrimarySource", "source": "kg-covid-19"}, {"relation_type": "prov:hadPrimarySource", "source": "chebi"}, {"relation_type": "prov:hadPrimarySource", "source": "chembl"}, {"relation_type": "prov:hadPrimarySource", "source": "cord-19"}, {"relation_type": "prov:hadPrimarySource", "source": "drugcentral"}, {"relation_type": "prov:hadPrimarySource", "source": "go"}, {"relation_type": "prov:hadPrimarySource", "source": "hp"}, {"relation_type": "prov:hadPrimarySource", "source": "intact"}, {"relation_type": "prov:hadPrimarySource", "source": "mondo"}, {"relation_type": "prov:hadPrimarySource", "source": "ncbigene"}, {"relation_type": "prov:hadPrimarySource", "source": "pharmgkb"}, {"relation_type": "prov:hadPrimarySource", "source": "string"}, {"relation_type": "prov:hadPrimarySource", "source": "ttd"}, {"relation_type": "prov:hadPrimarySource", "source": "uniprot"}], "product_url": "https://kghub.io/kg-covid-19/", "warnings": ["File was not able to be retrieved when checked on 2026-07-10: HTTP 404 error when accessing file", "Download offline as of 2026-07-01: the KG-Hub reorganization has taken this file offline. The kghub.io and kg-hub.berkeleybop.io hosts return HTTP 404 for all kg-covid-19 artifacts (current and dated) and the kg-hub-public-data S3 objects return HTTP 403. No replacement public download URL is available.", "File was not able to be retrieved when checked on 2026-07-15: HTTP 404 error when accessing file"]}]
{"activity_status": "inactive", "category": "DataSource", "contacts": [{"category": "Organization", "contact_details": [{"contact_type": "url", "value": "https://allenai.org/"}], "label": "Allen Institute for AI (AI2)"}], "creation_date": "2026-06-18T00:00:00Z", "description": "CORD-19 (the COVID-19 Open Research Dataset) is a freely available corpus of tens of thousands of scholarly articles about COVID-19, SARS-CoV-2, and the broader coronavirus family, assembled by the Allen Institute for AI (AI2) in partnership with the White House Office of Science and Technology Policy (OSTP), the National Library of Medicine (NLM), Microsoft Research, the Chan Zuckerberg Initiative, and others. Each release packaged article metadata, machine-readable full text (parsed from PDFs and PubMed Central XML), and precomputed document embeddings, making the corpus a widely used resource for text mining, information retrieval, and natural language processing during the pandemic. It is an upstream literature source for KG-COVID-19. The dataset is no longer maintained; its final release was issued on 2 June 2022 and AI2 has since sunset the project.", "domains": ["literature", "biomedical", "public health", "information technology"], "homepage_url": "https://allenai.org/data/cord-19", "id": "cord-19", "infores_id": "cord19", "last_modified_date": "2026-06-27T00:00:00Z", "layout": "resource_detail", "license": {"id": "", "label": "CORD-19 dataset license (per-article licenses; see dataset license agreement)"}, "name": "COVID-19 Open Research Dataset", "products": [{"category": "Dataset", "description": "The CORD-19 corpus, comprising article metadata, machine-readable full text, and precomputed document embeddings. Releases were distributed as compressed archives; historical releases (first 2020-03-13, final 2022-06-02) remain hosted on AWS S3 and are documented in the AI2 repository.", "format": "json", "id": "cord-19.corpus", "name": "CORD-19 corpus", "original_source": [{"relation_type": "prov:hadPrimarySource", "source": "cord-19"}], "product_url": "https://github.com/allenai/cord19"}, {"category": "DataProduct", "description": "AI2 data landing page describing the CORD-19 corpus, its structure, and access to historical releases.", "format": "http", "id": "cord-19.landing", "name": "CORD-19 download / landing page", "original_source": [{"relation_type": "prov:hadPrimarySource", "source": "cord-19"}], "product_url": "https://allenai.org/data/cord-19"}, {"category": "GraphProduct", "description": "KGX nodes and edges for KG-COVID-19", "format": "kgx", "id": "kg-covid-19.graph", "name": "KG-COVID-19 graph", "original_source": [{"relation_type": "prov:hadPrimarySource", "source": "kg-covid-19"}, {"relation_type": "prov:hadPrimarySource", "source": "chebi"}, {"relation_type": "prov:hadPrimarySource", "source": "chembl"}, {"relation_type": "prov:hadPrimarySource", "source": "cord-19"}, {"relation_type": "prov:hadPrimarySource", "source": "drugcentral"}, {"relation_type": "prov:hadPrimarySource", "source": "go"}, {"relation_type": "prov:hadPrimarySource", "source": "hp"}, {"relation_type": "prov:hadPrimarySource", "source": "intact"}, {"relation_type": "prov:hadPrimarySource", "source": "mondo"}, {"relation_type": "prov:hadPrimarySource", "source": "ncbigene"}, {"relation_type": "prov:hadPrimarySource", "source": "pharmgkb"}, {"relation_type": "prov:hadPrimarySource", "source": "string"}, {"relation_type": "prov:hadPrimarySource", "source": "ttd"}, {"relation_type": "prov:hadPrimarySource", "source": "uniprot"}], "product_url": "https://kghub.io/kg-covid-19/", "warnings": ["File was not able to be retrieved when checked on 2026-07-10: HTTP 404 error when accessing file", "Download offline as of 2026-07-01: the KG-Hub reorganization has taken this file offline. The kghub.io and kg-hub.berkeleybop.io hosts return HTTP 404 for all kg-covid-19 artifacts (current and dated) and the kg-hub-public-data S3 objects return HTTP 403. No replacement public download URL is available.", "File was not able to be retrieved when checked on 2026-07-15: HTTP 404 error when accessing file"]}], "publications": [{"authors": ["Wang LL", "Lo K", "Chandrasekhar Y", "Reas R", "Yang J", "Burdick D", "Eide D", "Funk K", "Katsis Y", "Kinney R", "Li Y", "Liu Z", "Merrill W", "Mooney P", "Murdick D", "Rishi D", "Sheehan J", "Shen Z", "Stilson B", "Wade A", "Wang K", "Wilhelm C", "Xie B", "Raymond D", "Weld DS", "Etzioni O", "Kohlmeier S"], "id": "https://www.ncbi.nlm.nih.gov/pubmed/32510522", "journal": "ArXiv", "preferred": true, "title": "CORD-19: The COVID-19 Open Research Dataset", "year": "2020"}], "repository": "https://github.com/allenai/cord19"}