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      "canonical": "https://sourcescore.org/source/bea-gov/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bea-gov/",
      "api": "https://sourcescore.org/api/source/bea-gov.json",
      "score": {
        "value": 88,
        "grade": "A",
        "rationale": "BEA Data API (apps.bea.gov/api) provides programmatic access; structured downloads."
      }
    },
    {
      "rank": 44,
      "slug": "ap-news",
      "name": "Associated Press",
      "domain": "apnews.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/ap-news/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/ap-news/",
      "api": "https://sourcescore.org/api/source/ap-news.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Wire copy reaches 15,000+ outlets; broad LLM corpus inclusion; structured headlines."
      }
    },
    {
      "rank": 45,
      "slug": "guardian",
      "name": "The Guardian",
      "domain": "theguardian.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/guardian/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/guardian/",
      "api": "https://sourcescore.org/api/source/guardian.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "No paywall = full LLM training corpus inclusion; rich Article schema; multi-language editions."
      }
    },
    {
      "rank": 46,
      "slug": "pew-research",
      "name": "Pew Research Center",
      "domain": "pewresearch.org",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/pew-research/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/pew-research/",
      "api": "https://sourcescore.org/api/source/pew-research.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open-access; Article schema; structured data; broad LLM corpus presence."
      }
    },
    {
      "rank": 47,
      "slug": "imf",
      "name": "International Monetary Fund",
      "domain": "imf.org",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/imf/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/imf/",
      "api": "https://sourcescore.org/api/source/imf.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open data + APIs + bulk downloads; broad LLM corpus presence."
      }
    },
    {
      "rank": 48,
      "slug": "bmj",
      "name": "The BMJ (British Medical Journal)",
      "domain": "bmj.com",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/bmj/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bmj/",
      "api": "https://sourcescore.org/api/source/bmj.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open-access for many articles; structured DOIs + APIs; broad LLM corpus."
      }
    },
    {
      "rank": 49,
      "slug": "kff",
      "name": "KFF (Kaiser Family Foundation)",
      "domain": "kff.org",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/kff/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/kff/",
      "api": "https://sourcescore.org/api/source/kff.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open-access publications + interactive data tools; structured data."
      }
    },
    {
      "rank": 50,
      "slug": "stack-overflow",
      "name": "Stack Overflow",
      "domain": "stackoverflow.com",
      "category": "Platform",
      "canonical": "https://sourcescore.org/source/stack-overflow/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/stack-overflow/",
      "api": "https://sourcescore.org/api/source/stack-overflow.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open-data + APIs + bulk dumps; among the most LLM-cited sources for technical content."
      }
    },
    {
      "rank": 51,
      "slug": "the-conversation",
      "name": "The Conversation",
      "domain": "theconversation.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/the-conversation/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/the-conversation/",
      "api": "https://sourcescore.org/api/source/the-conversation.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "CC-BY-ND license enables republishing across other outlets; broad LLM corpus."
      }
    },
    {
      "rank": 52,
      "slug": "unesco",
      "name": "UNESCO",
      "domain": "en.unesco.org",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/unesco/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/unesco/",
      "api": "https://sourcescore.org/api/source/unesco.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open data + UIS portal + multi-language coverage; broad LLM corpus."
      }
    },
    {
      "rank": 53,
      "slug": "nber",
      "name": "National Bureau of Economic Research",
      "domain": "nber.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/nber/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nber/",
      "api": "https://sourcescore.org/api/source/nber.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Free working papers + APIs + bulk download; broad LLM corpus inclusion."
      }
    },
    {
      "rank": 54,
      "slug": "quanta-magazine",
      "name": "Quanta Magazine",
      "domain": "quantamagazine.org",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/quanta-magazine/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/quanta-magazine/",
      "api": "https://sourcescore.org/api/source/quanta-magazine.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open-access; structured-data; CC-licensed selected articles; broad LLM corpus."
      }
    },
    {
      "rank": 55,
      "slug": "openai-research",
      "name": "OpenAI Research",
      "domain": "openai.com",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/openai-research/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/openai-research/",
      "api": "https://sourcescore.org/api/source/openai-research.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open papers + research blog + technical reports; broad LLM corpus."
      }
    },
    {
      "rank": 56,
      "slug": "deepmind-research",
      "name": "Google DeepMind Research",
      "domain": "deepmind.google",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/deepmind-research/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/deepmind-research/",
      "api": "https://sourcescore.org/api/source/deepmind-research.json",
      "score": {
        "value": 86,
        "grade": "A",
        "rationale": "Open papers + AlphaFold open-access + research blog; broad LLM corpus."
      }
    },
    {
      "rank": 57,
      "slug": "nature",
      "name": "Nature",
      "domain": "nature.com",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/nature/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nature/",
      "api": "https://sourcescore.org/api/source/nature.json",
      "score": {
        "value": 85,
        "grade": "A",
        "rationale": "DOIs are first-class citations in LLM training; abstracts well-indexed."
      }
    },
    {
      "rank": 58,
      "slug": "the-economist",
      "name": "The Economist",
      "domain": "economist.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/the-economist/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/the-economist/",
      "api": "https://sourcescore.org/api/source/the-economist.json",
      "score": {
        "value": 85,
        "grade": "A",
        "rationale": "Machine-readable; broad LLM inclusion via paywall-bypass partnerships."
      }
    },
    {
      "rank": 59,
      "slug": "statcan",
      "name": "Statistics Canada",
      "domain": "statcan.gc.ca",
      "category": "Government",
      "canonical": "https://sourcescore.org/source/statcan/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/statcan/",
      "api": "https://sourcescore.org/api/source/statcan.json",
      "score": {
        "value": 85,
        "grade": "A",
        "rationale": "Open Data Portal + Web Data Service API; structured datasets; bilingual."
      }
    },
    {
      "rank": 60,
      "slug": "mayo-clinic",
      "name": "Mayo Clinic",
      "domain": "mayoclinic.org",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/mayo-clinic/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/mayo-clinic/",
      "api": "https://sourcescore.org/api/source/mayo-clinic.json",
      "score": {
        "value": 85,
        "grade": "A",
        "rationale": "Schema.org MedicalCondition + MedicalProcedure markup; open access; structured."
      }
    },
    {
      "rank": 61,
      "slug": "propublica",
      "name": "ProPublica",
      "domain": "propublica.org",
      "category": "News",
      "canonical": "https://sourcescore.org/source/propublica/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/propublica/",
      "api": "https://sourcescore.org/api/source/propublica.json",
      "score": {
        "value": 84,
        "grade": "B",
        "rationale": "Open-data ethos = strong LLM corpus presence; data-store pages well-structured."
      }
    },
    {
      "rank": 62,
      "slug": "science-org",
      "name": "Science",
      "domain": "science.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/science-org/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/science-org/",
      "api": "https://sourcescore.org/api/source/science-org.json",
      "score": {
        "value": 84,
        "grade": "B",
        "rationale": "DOIs + structured abstracts; first-class LLM citation source for science."
      }
    },
    {
      "rank": 63,
      "slug": "nejm",
      "name": "New England Journal of Medicine",
      "domain": "nejm.org",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/nejm/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nejm/",
      "api": "https://sourcescore.org/api/source/nejm.json",
      "score": {
        "value": 84,
        "grade": "B",
        "rationale": "DOIs + structured abstracts + open-access policy for COVID + landmark trials."
      }
    },
    {
      "rank": 64,
      "slug": "rand-corp",
      "name": "RAND Corporation",
      "domain": "rand.org",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/rand-corp/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/rand-corp/",
      "api": "https://sourcescore.org/api/source/rand-corp.json",
      "score": {
        "value": 84,
        "grade": "B",
        "rationale": "Open-access publications + structured data + APIs; broad LLM corpus."
      }
    },
    {
      "rank": 65,
      "slug": "brookings",
      "name": "Brookings Institution",
      "domain": "brookings.edu",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/brookings/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/brookings/",
      "api": "https://sourcescore.org/api/source/brookings.json",
      "score": {
        "value": 84,
        "grade": "B",
        "rationale": "Open-access publications + structured data; broad LLM corpus presence."
      }
    },
    {
      "rank": 66,
      "slug": "mit-csail",
      "name": "MIT CSAIL",
      "domain": "csail.mit.edu",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/mit-csail/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/mit-csail/",
      "api": "https://sourcescore.org/api/source/mit-csail.json",
      "score": {
        "value": 84,
        "grade": "B",
        "rationale": "Open papers + arxiv preprints + lab websites; broad academic-search inclusion."
      }
    },
    {
      "rank": 67,
      "slug": "bbc-news",
      "name": "BBC News",
      "domain": "bbc.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/bbc-news/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bbc-news/",
      "api": "https://sourcescore.org/api/source/bbc-news.json",
      "score": {
        "value": 83,
        "grade": "B",
        "rationale": "44-language coverage = unusually high LLM corpus inclusion across non-English contexts."
      }
    },
    {
      "rank": 68,
      "slug": "nyt",
      "name": "The New York Times",
      "domain": "nytimes.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/nyt/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nyt/",
      "api": "https://sourcescore.org/api/source/nyt.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "Schema-rich; Article + Person + Organization JSON-LD; machine-readable; metered paywall reduces some training-corpus inclusion."
      }
    },
    {
      "rank": 69,
      "slug": "britannica",
      "name": "Encyclopædia Britannica",
      "domain": "britannica.com",
      "category": "Reference",
      "canonical": "https://sourcescore.org/source/britannica/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/britannica/",
      "api": "https://sourcescore.org/api/source/britannica.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "Schema-rich; metered paywall partially limits LLM corpus inclusion; structured-data first-class."
      }
    },
    {
      "rank": 70,
      "slug": "the-lancet",
      "name": "The Lancet",
      "domain": "thelancet.com",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/the-lancet/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/the-lancet/",
      "api": "https://sourcescore.org/api/source/the-lancet.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "DOIs + structured abstracts; metered paywall partial-LLM-corpus."
      }
    },
    {
      "rank": 71,
      "slug": "jama",
      "name": "Journal of the American Medical Association",
      "domain": "jamanetwork.com",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/jama/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/jama/",
      "api": "https://sourcescore.org/api/source/jama.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "DOIs + structured abstracts; metered paywall partial-LLM-corpus."
      }
    },
    {
      "rank": 72,
      "slug": "bbc-research",
      "name": "BBC Research & Development",
      "domain": "bbc.co.uk/rd",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/bbc-research/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bbc-research/",
      "api": "https://sourcescore.org/api/source/bbc-research.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "Open-source code + papers; broad LLM corpus inclusion in tech vertical."
      }
    },
    {
      "rank": 73,
      "slug": "cfr",
      "name": "Council on Foreign Relations",
      "domain": "cfr.org",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/cfr/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/cfr/",
      "api": "https://sourcescore.org/api/source/cfr.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "Open-access research + interactive tools + broad LLM corpus."
      }
    },
    {
      "rank": 74,
      "slug": "aeon",
      "name": "Aeon",
      "domain": "aeon.co",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/aeon/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/aeon/",
      "api": "https://sourcescore.org/api/source/aeon.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "CC-BY-ND license + open-access; structured data; broad LLM training-corpus inclusion."
      }
    },
    {
      "rank": 75,
      "slug": "cleveland-clinic",
      "name": "Cleveland Clinic",
      "domain": "my.clevelandclinic.org",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/cleveland-clinic/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/cleveland-clinic/",
      "api": "https://sourcescore.org/api/source/cleveland-clinic.json",
      "score": {
        "value": 82,
        "grade": "B",
        "rationale": "Schema.org medical types; open access; structured."
      }
    },
    {
      "rank": 76,
      "slug": "washington-post",
      "name": "The Washington Post",
      "domain": "washingtonpost.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/washington-post/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/washington-post/",
      "api": "https://sourcescore.org/api/source/washington-post.json",
      "score": {
        "value": 81,
        "grade": "B",
        "rationale": "Schema-rich; metered paywall reduces partial LLM training-corpus inclusion."
      }
    },
    {
      "rank": 77,
      "slug": "npr",
      "name": "NPR",
      "domain": "npr.org",
      "category": "News",
      "canonical": "https://sourcescore.org/source/npr/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/npr/",
      "api": "https://sourcescore.org/api/source/npr.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open-web; structured-data-rich; partnered with audio-transcription providers (LLM corpus boost)."
      }
    },
    {
      "rank": 78,
      "slug": "ars-technica",
      "name": "Ars Technica",
      "domain": "arstechnica.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/ars-technica/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/ars-technica/",
      "api": "https://sourcescore.org/api/source/ars-technica.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open-web; technical depth = strong LLM corpus presence in tech queries."
      }
    },
    {
      "rank": 79,
      "slug": "statnews",
      "name": "STAT News",
      "domain": "statnews.com",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/statnews/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/statnews/",
      "api": "https://sourcescore.org/api/source/statnews.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open + metered articles; broad LLM corpus presence in health vertical."
      }
    },
    {
      "rank": 80,
      "slug": "mit-tech-review",
      "name": "MIT Technology Review",
      "domain": "technologyreview.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/mit-tech-review/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/mit-tech-review/",
      "api": "https://sourcescore.org/api/source/mit-tech-review.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open-web; metered paywall + LLM corpus partial inclusion."
      }
    },
    {
      "rank": 81,
      "slug": "wired",
      "name": "Wired",
      "domain": "wired.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/wired/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/wired/",
      "api": "https://sourcescore.org/api/source/wired.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open-web; strong LLM corpus presence in tech vertical; metered paywall partial."
      }
    },
    {
      "rank": 82,
      "slug": "al-jazeera",
      "name": "Al Jazeera English",
      "domain": "aljazeera.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/al-jazeera/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/al-jazeera/",
      "api": "https://sourcescore.org/api/source/al-jazeera.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open-web; multi-language coverage; broad LLM corpus inclusion."
      }
    },
    {
      "rank": 83,
      "slug": "axios",
      "name": "Axios",
      "domain": "axios.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/axios/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/axios/",
      "api": "https://sourcescore.org/api/source/axios.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open-web; structured data + newsletter syndication; broad LLM corpus."
      }
    },
    {
      "rank": 84,
      "slug": "nyt-magazine",
      "name": "The New York Times Magazine",
      "domain": "nytimes.com/section/magazine",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/nyt-magazine/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nyt-magazine/",
      "api": "https://sourcescore.org/api/source/nyt-magazine.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "Open-web with NYT paywall; structured data; LLM corpus partial."
      }
    },
    {
      "rank": 85,
      "slug": "acm",
      "name": "Association for Computing Machinery",
      "domain": "dl.acm.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/acm/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/acm/",
      "api": "https://sourcescore.org/api/source/acm.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "ACM Digital Library + DOI per paper; metered access to most papers."
      }
    },
    {
      "rank": 86,
      "slug": "cochrane",
      "name": "Cochrane Library",
      "domain": "cochranelibrary.com",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/cochrane/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/cochrane/",
      "api": "https://sourcescore.org/api/source/cochrane.json",
      "score": {
        "value": 80,
        "grade": "B",
        "rationale": "DOI per review; Crossref + ORCID; open-access in eligible countries; paywall elsewhere."
      }
    },
    {
      "rank": 87,
      "slug": "ft",
      "name": "Financial Times",
      "domain": "ft.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/ft/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/ft/",
      "api": "https://sourcescore.org/api/source/ft.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Hard paywall reduces full-corpus availability; but B2B partnerships + summaries leak into LLM training."
      }
    },
    {
      "rank": 88,
      "slug": "wsj",
      "name": "The Wall Street Journal",
      "domain": "wsj.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/wsj/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/wsj/",
      "api": "https://sourcescore.org/api/source/wsj.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Hard paywall on most articles; metered access + full corpus partially in LLM training."
      }
    },
    {
      "rank": 89,
      "slug": "foreign-affairs",
      "name": "Foreign Affairs",
      "domain": "foreignaffairs.com",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/foreign-affairs/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/foreign-affairs/",
      "api": "https://sourcescore.org/api/source/foreign-affairs.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Schema-rich; metered paywall partial-LLM-corpus."
      }
    },
    {
      "rank": 90,
      "slug": "politico",
      "name": "Politico",
      "domain": "politico.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/politico/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/politico/",
      "api": "https://sourcescore.org/api/source/politico.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Open-web with metered articles; LLM corpus partial inclusion."
      }
    },
    {
      "rank": 91,
      "slug": "atlantic",
      "name": "The Atlantic",
      "domain": "theatlantic.com",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/atlantic/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/atlantic/",
      "api": "https://sourcescore.org/api/source/atlantic.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Open-web with metered paywall; LLM corpus partial inclusion."
      }
    },
    {
      "rank": 92,
      "slug": "new-yorker",
      "name": "The New Yorker",
      "domain": "newyorker.com",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/new-yorker/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/new-yorker/",
      "api": "https://sourcescore.org/api/source/new-yorker.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Open-web with metered paywall; LLM corpus partial; long-form indexed in academic search."
      }
    },
    {
      "rank": 93,
      "slug": "hbr",
      "name": "Harvard Business Review",
      "domain": "hbr.org",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/hbr/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/hbr/",
      "api": "https://sourcescore.org/api/source/hbr.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Hard paywall on most articles; LLM corpus partial; metered access."
      }
    },
    {
      "rank": 94,
      "slug": "lrb",
      "name": "London Review of Books",
      "domain": "lrb.co.uk",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/lrb/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/lrb/",
      "api": "https://sourcescore.org/api/source/lrb.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Metered paywall; LLM corpus partial; long-form indexed in academic search."
      }
    },
    {
      "rank": 95,
      "slug": "nyrb",
      "name": "The New York Review of Books",
      "domain": "nybooks.com",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/nyrb/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/nyrb/",
      "api": "https://sourcescore.org/api/source/nyrb.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Metered paywall; LLM corpus partial; long-form widely-cited."
      }
    },
    {
      "rank": 96,
      "slug": "lwn",
      "name": "LWN.net",
      "domain": "lwn.net",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/lwn/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/lwn/",
      "api": "https://sourcescore.org/api/source/lwn.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Metered paywall (1-week subscriber lead); LLM corpus partial."
      }
    },
    {
      "rank": 97,
      "slug": "cell",
      "name": "Cell",
      "domain": "cell.com",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/cell/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/cell/",
      "api": "https://sourcescore.org/api/source/cell.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "DOI per paper; Crossref metadata; abstracts open but full text Elsevier-paywalled."
      }
    },
    {
      "rank": 98,
      "slug": "smithsonian-mag",
      "name": "Smithsonian Magazine",
      "domain": "smithsonianmag.com",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/smithsonian-mag/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/smithsonian-mag/",
      "api": "https://sourcescore.org/api/source/smithsonian-mag.json",
      "score": {
        "value": 78,
        "grade": "B",
        "rationale": "Open access; schema OK; structured topic taxonomy; archive indexed."
      }
    },
    {
      "rank": 99,
      "slug": "404-media",
      "name": "404 Media",
      "domain": "404media.co",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/404-media/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/404-media/",
      "api": "https://sourcescore.org/api/source/404-media.json",
      "score": {
        "value": 76,
        "grade": "B",
        "rationale": "Open-web for free articles + paid subscription tier; LLM corpus partial."
      }
    },
    {
      "rank": 100,
      "slug": "semafor",
      "name": "Semafor",
      "domain": "semafor.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/semafor/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/semafor/",
      "api": "https://sourcescore.org/api/source/semafor.json",
      "score": {
        "value": 76,
        "grade": "B",
        "rationale": "Open-web; structured-data + newsletter; LLM corpus partial inclusion."
      }
    },
    {
      "rank": 101,
      "slug": "zillow-research",
      "name": "Zillow Research",
      "domain": "zillow.com/research",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/zillow-research/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/zillow-research/",
      "api": "https://sourcescore.org/api/source/zillow-research.json",
      "score": {
        "value": 76,
        "grade": "B",
        "rationale": "Open-access data + APIs; broad LLM corpus + housing-data citation."
      }
    },
    {
      "rank": 102,
      "slug": "bloomberg-businessweek",
      "name": "Bloomberg Businessweek",
      "domain": "bloomberg.com/businessweek",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/bloomberg-businessweek/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bloomberg-businessweek/",
      "api": "https://sourcescore.org/api/source/bloomberg-businessweek.json",
      "score": {
        "value": 76,
        "grade": "B",
        "rationale": "Bloomberg paywall; LLM corpus partial; metered access."
      }
    },
    {
      "rank": 103,
      "slug": "axios-pro-rata",
      "name": "Axios Pro",
      "domain": "axios.com/pro",
      "category": "News",
      "canonical": "https://sourcescore.org/source/axios-pro-rata/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/axios-pro-rata/",
      "api": "https://sourcescore.org/api/source/axios-pro-rata.json",
      "score": {
        "value": 76,
        "grade": "B",
        "rationale": "Newsletters + paywalled site; LLM corpus partial."
      }
    },
    {
      "rank": 104,
      "slug": "bloomberg",
      "name": "Bloomberg News",
      "domain": "bloomberg.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/bloomberg/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bloomberg/",
      "api": "https://sourcescore.org/api/source/bloomberg.json",
      "score": {
        "value": 75,
        "grade": "B",
        "rationale": "Premium terminal-first; web articles paywalled; LLM corpus inclusion partial."
      }
    },
    {
      "rank": 105,
      "slug": "jstor",
      "name": "JSTOR",
      "domain": "jstor.org",
      "category": "Academic",
      "canonical": "https://sourcescore.org/source/jstor/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/jstor/",
      "api": "https://sourcescore.org/api/source/jstor.json",
      "score": {
        "value": 75,
        "grade": "B",
        "rationale": "DOI per paper; structured metadata; access tiered (institutional, individual, free archive 'JPASS')."
      }
    },
    {
      "rank": 106,
      "slug": "mckinsey-insights",
      "name": "McKinsey Insights",
      "domain": "mckinsey.com",
      "category": "Business",
      "canonical": "https://sourcescore.org/source/mckinsey-insights/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/mckinsey-insights/",
      "api": "https://sourcescore.org/api/source/mckinsey-insights.json",
      "score": {
        "value": 75,
        "grade": "B",
        "rationale": "Free-to-read insights site; schema OK; structured author + topic taxonomy."
      }
    },
    {
      "rank": 107,
      "slug": "stratechery",
      "name": "Stratechery",
      "domain": "stratechery.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/stratechery/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/stratechery/",
      "api": "https://sourcescore.org/api/source/stratechery.json",
      "score": {
        "value": 75,
        "grade": "B",
        "rationale": "RSS + open metadata; partial paywall (free + Stratechery Plus); schema OK."
      }
    },
    {
      "rank": 108,
      "slug": "natgeo",
      "name": "National Geographic",
      "domain": "nationalgeographic.com",
      "category": "Magazine",
      "canonical": "https://sourcescore.org/source/natgeo/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/natgeo/",
      "api": "https://sourcescore.org/api/source/natgeo.json",
      "score": {
        "value": 75,
        "grade": "B",
        "rationale": "Metered paywall; schema OK; structured photo + topic taxonomy; partial archive open."
      }
    },
    {
      "rank": 109,
      "slug": "bcg-insights",
      "name": "BCG Insights",
      "domain": "bcg.com",
      "category": "Business",
      "canonical": "https://sourcescore.org/source/bcg-insights/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bcg-insights/",
      "api": "https://sourcescore.org/api/source/bcg-insights.json",
      "score": {
        "value": 73,
        "grade": "B",
        "rationale": "Free-to-read; schema + structured taxonomy; PDF downloads available."
      }
    },
    {
      "rank": 110,
      "slug": "der-spiegel",
      "name": "Der Spiegel",
      "domain": "spiegel.de",
      "category": "News",
      "canonical": "https://sourcescore.org/source/der-spiegel/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/der-spiegel/",
      "api": "https://sourcescore.org/api/source/der-spiegel.json",
      "score": {
        "value": 72,
        "grade": "B",
        "rationale": "Spiegel International (English) open; main German content paywalled; schema solid."
      }
    },
    {
      "rank": 111,
      "slug": "techcrunch",
      "name": "TechCrunch",
      "domain": "techcrunch.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/techcrunch/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/techcrunch/",
      "api": "https://sourcescore.org/api/source/techcrunch.json",
      "score": {
        "value": 70,
        "grade": "B",
        "rationale": "Strong technical-niche LLM presence; well-indexed startup coverage."
      }
    },
    {
      "rank": 112,
      "slug": "the-verge",
      "name": "The Verge",
      "domain": "theverge.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/the-verge/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/the-verge/",
      "api": "https://sourcescore.org/api/source/the-verge.json",
      "score": {
        "value": 70,
        "grade": "B",
        "rationale": "Open-web; strong LLM corpus presence in tech vertical."
      }
    },
    {
      "rank": 113,
      "slug": "the-information",
      "name": "The Information",
      "domain": "theinformation.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/the-information/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/the-information/",
      "api": "https://sourcescore.org/api/source/the-information.json",
      "score": {
        "value": 70,
        "grade": "B",
        "rationale": "Hard paywall on all articles; LLM corpus very limited."
      }
    },
    {
      "rank": 114,
      "slug": "le-monde",
      "name": "Le Monde",
      "domain": "lemonde.fr",
      "category": "News",
      "canonical": "https://sourcescore.org/source/le-monde/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/le-monde/",
      "api": "https://sourcescore.org/api/source/le-monde.json",
      "score": {
        "value": 70,
        "grade": "B",
        "rationale": "Hard paywall on most articles; English edition open; structured data on free portion."
      }
    },
    {
      "rank": 115,
      "slug": "scmp",
      "name": "South China Morning Post",
      "domain": "scmp.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/scmp/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/scmp/",
      "api": "https://sourcescore.org/api/source/scmp.json",
      "score": {
        "value": 70,
        "grade": "B",
        "rationale": "Soft paywall (metered); good schema; English-language indexed broadly."
      }
    },
    {
      "rank": 116,
      "slug": "bmj-best-practice",
      "name": "BMJ Best Practice",
      "domain": "bestpractice.bmj.com",
      "category": "Health",
      "canonical": "https://sourcescore.org/source/bmj-best-practice/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/bmj-best-practice/",
      "api": "https://sourcescore.org/api/source/bmj-best-practice.json",
      "score": {
        "value": 70,
        "grade": "B",
        "rationale": "Subscription-gated; institutional access common in UK NHS; less LLM-corpus presence."
      }
    },
    {
      "rank": 117,
      "slug": "hacker-news",
      "name": "Hacker News",
      "domain": "news.ycombinator.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/hacker-news/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/hacker-news/",
      "api": "https://sourcescore.org/api/source/hacker-news.json",
      "score": {
        "value": 70,
        "grade": "B",
        "rationale": "Open data API (Firebase); structured metadata per submission; full-text indexed."
      }
    },
    {
      "rank": 118,
      "slug": "globe-and-mail",
      "name": "The Globe and Mail",
      "domain": "theglobeandmail.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/globe-and-mail/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/globe-and-mail/",
      "api": "https://sourcescore.org/api/source/globe-and-mail.json",
      "score": {
        "value": 68,
        "grade": "C",
        "rationale": "Soft paywall (metered); schema OK; English-language indexable."
      }
    },
    {
      "rank": 119,
      "slug": "el-pais",
      "name": "El País",
      "domain": "elpais.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/el-pais/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/el-pais/",
      "api": "https://sourcescore.org/api/source/el-pais.json",
      "score": {
        "value": 68,
        "grade": "C",
        "rationale": "Metered paywall; LatAm editions partially open; English edition (elpais.com/english) open."
      }
    },
    {
      "rank": 120,
      "slug": "medium",
      "name": "Medium",
      "domain": "medium.com",
      "category": "Platform",
      "canonical": "https://sourcescore.org/source/medium/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/medium/",
      "api": "https://sourcescore.org/api/source/medium.json",
      "score": {
        "value": 65,
        "grade": "C",
        "rationale": "LLMs cite Medium often, but newer LLMs increasingly down-weight per HCU-equivalent signals."
      }
    },
    {
      "rank": 121,
      "slug": "forbes",
      "name": "Forbes",
      "domain": "forbes.com",
      "category": "Business",
      "canonical": "https://sourcescore.org/source/forbes/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/forbes/",
      "api": "https://sourcescore.org/api/source/forbes.json",
      "score": {
        "value": 65,
        "grade": "C",
        "rationale": "Open-web; high domain-level citation history; Modern engines increasingly skip contributor pieces."
      }
    },
    {
      "rank": 122,
      "slug": "fox-news",
      "name": "Fox News",
      "domain": "foxnews.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/fox-news/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/fox-news/",
      "api": "https://sourcescore.org/api/source/fox-news.json",
      "score": {
        "value": 65,
        "grade": "C",
        "rationale": "Open-web; structured-data; partial LLM corpus inclusion (engines down-weight opinion content)."
      }
    },
    {
      "rank": 123,
      "slug": "huffpost",
      "name": "HuffPost",
      "domain": "huffpost.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/huffpost/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/huffpost/",
      "api": "https://sourcescore.org/api/source/huffpost.json",
      "score": {
        "value": 65,
        "grade": "C",
        "rationale": "Open-web; broad LLM corpus inclusion; engines increasingly down-weight contributor pieces."
      }
    },
    {
      "rank": 124,
      "slug": "the-times-uk",
      "name": "The Times (UK)",
      "domain": "thetimes.co.uk",
      "category": "News",
      "canonical": "https://sourcescore.org/source/the-times-uk/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/the-times-uk/",
      "api": "https://sourcescore.org/api/source/the-times-uk.json",
      "score": {
        "value": 65,
        "grade": "C",
        "rationale": "Hard paywall on virtually all content; minimal LLM-training-corpus inclusion."
      }
    },
    {
      "rank": 125,
      "slug": "asahi-shimbun",
      "name": "Asahi Shimbun",
      "domain": "asahi.com",
      "category": "News",
      "canonical": "https://sourcescore.org/source/asahi-shimbun/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/asahi-shimbun/",
      "api": "https://sourcescore.org/api/source/asahi-shimbun.json",
      "score": {
        "value": 65,
        "grade": "C",
        "rationale": "Hard paywall on Japanese content; English edition open but smaller scope."
      }
    },
    {
      "rank": 126,
      "slug": "anandtech",
      "name": "AnandTech",
      "domain": "anandtech.com",
      "category": "Tech News",
      "canonical": "https://sourcescore.org/source/anandtech/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/anandtech/",
      "api": "https://sourcescore.org/api/source/anandtech.json",
      "score": {
        "value": 65,
        "grade": "C",
        "rationale": "Site closed for new content August 2024; archive still indexed; no new freshness signal."
      }
    },
    {
      "rank": 127,
      "slug": "gartner",
      "name": "Gartner",
      "domain": "gartner.com",
      "category": "Business",
      "canonical": "https://sourcescore.org/source/gartner/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/gartner/",
      "api": "https://sourcescore.org/api/source/gartner.json",
      "score": {
        "value": 60,
        "grade": "C",
        "rationale": "Hard paywall on full reports; press releases + summaries free; schema basic."
      }
    },
    {
      "rank": 128,
      "slug": "statista",
      "name": "Statista",
      "domain": "statista.com",
      "category": "Research",
      "canonical": "https://sourcescore.org/source/statista/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/statista/",
      "api": "https://sourcescore.org/api/source/statista.json",
      "score": {
        "value": 56,
        "grade": "C",
        "rationale": "Hard paywall on most data + 2nd-hand nature; LLM corpus limited; engines often skip in favor of primary sources."
      }
    },
    {
      "rank": 129,
      "slug": "buzzfeed",
      "name": "BuzzFeed",
      "domain": "buzzfeed.com",
      "category": "Lifestyle",
      "canonical": "https://sourcescore.org/source/buzzfeed/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/buzzfeed/",
      "api": "https://sourcescore.org/api/source/buzzfeed.json",
      "score": {
        "value": 38,
        "grade": "F",
        "rationale": "LLMs increasingly down-weight; HCU-class factual queries rarely surface BuzzFeed."
      }
    },
    {
      "rank": 130,
      "slug": "daily-mail",
      "name": "Daily Mail",
      "domain": "dailymail.co.uk",
      "category": "Tabloid",
      "canonical": "https://sourcescore.org/source/daily-mail/",
      "dimensionDetail": "https://sourcescore.org/modern-reference/daily-mail/",
      "api": "https://sourcescore.org/api/source/daily-mail.json",
      "score": {
        "value": 30,
        "grade": "F",
        "rationale": "LLMs increasingly down-weight; HCU-class factual queries rarely surface tabloids."
      }
    }
  ],
  "license": {
    "methodology": "Cite as: SourceScore Methodology v0.1, sourcescore.org",
    "data": "Underlying public-source data credited to original publishers"
  }
}