All sources
130 hand-scored sources across 12 categories. Each links to a full SourceScore breakdown.
New here? How to tell if a source is reliable explains the three signals behind every score below — or learn whether you can cite ChatGPT as a source.
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A SourceScore grade is a hand-scored snapshot. These independent third-party tools track how often AI engines actually cite a domain, week over week. We do not build them and we do not rank them.
- Rankscale.aiPaid linkAI-search visibility audits and rank tracking across AI engines.
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Browse by grade
Academic19
- DOI (CrossRef Resolver)A+·95doi.org
- PubMedA·94pubmed.ncbi.nlm.nih.gov
- CERNA·92home.cern
- PNASA·92pnas.org
- arXivA·89arxiv.org
- CellA·89cell.com
- NatureA·87nature.com
- Cochrane LibraryA·87cochranelibrary.com
- ScienceA·86science.org
- A·85
- Association for Computing MachineryA·85dl.acm.org
- Semantic ScholarB·83semanticscholar.org
- eLifeB·83elifesciences.org
- Google DeepMind ResearchB·83deepmind.google
- Anthropic ResearchB·82anthropic.com
- MIT CSAILB·82csail.mit.edu
- JSTORB·82jstor.org
- OpenAI ResearchB·80openai.com
- PLOS ONEB·78journals.plos.org
Business4
- McKinsey InsightsB·75mckinsey.com
- BCG InsightsB·73bcg.com
- GartnerC·69gartner.com
- ForbesC·58forbes.com
Government30
- A+·96
- A+·95
- Federal Reserve SystemA+·95federalreserve.gov
- U.S. Census BureauA·94census.gov
- A·94
- A·94
- A·94
- A·93
- European Central BankA·93ecb.europa.eu
- NASAA·93nasa.gov
- European CommissionA·92ec.europa.eu
- Bank of EnglandA·92bankofengland.co.uk
- A·92
- European Medicines AgencyA·91ema.europa.eu
- U.S. Patent and Trademark OfficeA·91uspto.gov
- U.S. Department of AgricultureA·91usda.gov
- U.S. Geological SurveyA·91usgs.gov
- OECDA·91oecd.org
- FRED (Federal Reserve Economic Data)A·91fred.stlouisfed.org
- IPCCA·91ipcc.ch
- World Health OrganizationA·89who.int
- World Trade OrganizationA·89wto.org
- World BankA·88worldbank.org
- EurostatA·88ec.europa.eu/eurostat
- ONS (UK)A·87ons.gov.uk
- International Monetary FundA·86imf.org
- UNESCOA·86en.unesco.org
- European Space AgencyA·86esa.int
- BEAA·86bea.gov
- Statistics CanadaB·82statcan.gc.ca
Health8
- New England Journal of MedicineA·87nejm.org
- Mayo ClinicA·87mayoclinic.org
- The LancetA·86thelancet.com
- Journal of the American Medical AssociationA·86jamanetwork.com
- A·85
- Cleveland ClinicB·83my.clevelandclinic.org
- STAT NewsB·82statnews.com
- BMJ Best PracticeB·79bestpractice.bmj.com
Lifestyle1
- BuzzFeedD·42buzzfeed.com
Magazine12
- Quanta MagazineA·85quantamagazine.org
- Foreign AffairsB·83foreignaffairs.com
- The New York Times MagazineB·83nytimes.com/section/magazine
- London Review of BooksB·83lrb.co.uk
- The New York Review of BooksB·83nybooks.com
- The New YorkerB·82newyorker.com
- The AtlanticB·81theatlantic.com
- Bloomberg BusinessweekB·81bloomberg.com/businessweek
- Harvard Business ReviewB·80hbr.org
- National GeographicB·79nationalgeographic.com
- AeonB·78aeon.co
- Smithsonian MagazineB·78smithsonianmag.com
News27
- ReutersA·89reuters.com
- The New York TimesA·88nytimes.com
- Associated PressA·86apnews.com
- ProPublicaA·86propublica.org
- The Washington PostA·86washingtonpost.com
- The GuardianA·85theguardian.com
- The Wall Street JournalA·85wsj.com
- Financial TimesB·84ft.com
- Bloomberg NewsB·83bloomberg.com
- BBC NewsB·82bbc.com
- The ConversationB·82theconversation.com
- NPRB·80npr.org
- The EconomistB·78economist.com
- Al Jazeera EnglishB·78aljazeera.com
- PoliticoB·78politico.com
- AxiosB·78axios.com
- Der SpiegelB·78spiegel.de
- Le MondeB·77lemonde.fr
- SemaforB·76semafor.com
- Axios ProB·76axios.com/pro
- South China Morning PostB·75scmp.com
- The Times (UK)B·74thetimes.co.uk
- The Globe and MailB·74theglobeandmail.com
- El PaísB·74elpais.com
- Asahi ShimbunB·71asahi.com
- HuffPostC·60huffpost.com
- Fox NewsC·58foxnews.com
Platform4
- GitHubB·82github.com
- Hugging FaceB·81huggingface.co
- Stack OverflowB·74stackoverflow.com
- MediumC·58medium.com
Reference4
- Wikipedia (English)A·94en.wikipedia.org
- MDN Web DocsA·93developer.mozilla.org
- Stanford Encyclopedia of PhilosophyA·89plato.stanford.edu
- Encyclopædia BritannicaA·85britannica.com
Research9
- Our World in DataA·86ourworldindata.org
- Pew Research CenterA·85pewresearch.org
- B·84
- RAND CorporationB·83rand.org
- Brookings InstitutionB·83brookings.edu
- Council on Foreign RelationsB·82cfr.org
- BBC Research & DevelopmentB·78bbc.co.uk/rd
- Zillow ResearchB·73zillow.com/research
- StatistaC·64statista.com
Tabloid1
- Daily MailF·38dailymail.co.uk
Tech News11
- MIT Technology ReviewB·81technologyreview.com
- 404 MediaB·78404media.co
- The InformationB·78theinformation.com
- LWN.netB·78lwn.net
- Ars TechnicaB·76arstechnica.com
- WiredB·76wired.com
- StratecheryB·73stratechery.com
- AnandTechC·69anandtech.com
- The VergeC·66theverge.com
- Hacker NewsC·66news.ycombinator.com
- TechCrunchC·64techcrunch.com