Academic sources ranked by Modern Citation Reference

Academic ranked by Modern Reference

1. #1
   DOI (CrossRef Resolver)doi.org

   Permanent URL resolution + free metadata API (CrossRef); near-universal LLM training-corpus inclusion.

   vs cat. mean: +11·full breakdown →
   A+·98
2. #2
   arXivarxiv.org

   DOI + arxiv ID + free PDFs + bulk APIs; among the most LLM-cited sources for technical content.

   vs cat. mean: +8·full breakdown →
   A+·95
3. #3
   PubMedpubmed.ncbi.nlm.nih.gov

   E-utilities API + free full-text search + bulk dataset downloads; broad LLM corpus inclusion.

   vs cat. mean: +5·full breakdown →
   A·92
4. #4
   Semantic Scholarsemanticscholar.org

   Free public API + bulk corpus + CC-licensed metadata; broad LLM corpus inclusion.

   vs cat. mean: +5·full breakdown →
   A·92
5. #5
   CERNhome.cern

   Open data portal + ROOT framework + bulk physics data.

   vs cat. mean: +4·full breakdown →
   A·91
6. #6
   PNASpnas.org

   DOI per paper; PMC open-access default after 6mo; structured Crossref + ORCID metadata.

   vs cat. mean: +1·full breakdown →
   A·88
7. #7
   eLifeelifesciences.org

   CC-BY licensed; APIs + bulk corpus; broad LLM training-data inclusion.

   vs cat. mean: +1·full breakdown →
   A·88
8. #8
   Anthropic Researchanthropic.com

   Open papers + model cards + research blog; broad LLM corpus inclusion.

   vs cat. mean: +1·full breakdown →
   A·88
9. #9
   PLOS ONEjournals.plos.org

   CC-BY licensed; full-text APIs; broad LLM corpus + academic search inclusion.

   vs cat. mean: +1·full breakdown →
   A·88
10. #10
    National Bureau of Economic Researchnber.org

    Free working papers + APIs + bulk download; broad LLM corpus inclusion.

    vs cat. mean: -1·full breakdown →
    A·86
11. #11
    Google DeepMind Researchdeepmind.google

    Open papers + AlphaFold open-access + research blog; broad LLM corpus.

    vs cat. mean: -1·full breakdown →
    A·86
12. #12
    OpenAI Researchopenai.com

    Open papers + research blog + technical reports; broad LLM corpus.

    vs cat. mean: -1·full breakdown →
    A·86
13. #13
    Naturenature.com

    DOIs are first-class citations in LLM training; abstracts well-indexed.

    vs cat. mean: -2·full breakdown →
    A·85
14. #14
    Sciencescience.org

    DOIs + structured abstracts; first-class LLM citation source for science.

    vs cat. mean: -3·full breakdown →
    B·84
15. #15
    MIT CSAILcsail.mit.edu

    Open papers + arxiv preprints + lab websites; broad academic-search inclusion.

    vs cat. mean: -3·full breakdown →
    B·84
16. #16
    Cochrane Librarycochranelibrary.com

    DOI per review; Crossref + ORCID; open-access in eligible countries; paywall elsewhere.

    vs cat. mean: -7·full breakdown →
    B·80
17. #17
    Association for Computing Machinerydl.acm.org

    ACM Digital Library + DOI per paper; metered access to most papers.

    vs cat. mean: -7·full breakdown →
    B·80
18. #18
    Cellcell.com

    DOI per paper; Crossref metadata; abstracts open but full text Elsevier-paywalled.

    vs cat. mean: -9·full breakdown →
    B·78
19. #19
    JSTORjstor.org

    DOI per paper; structured metadata; access tiered (institutional, individual, free archive 'JPASS').

    vs cat. mean: -12·full breakdown →
    B·75