SourceScore
High Discipline AND high Velocity

Best fact-checking-grade sources for AI citation

Sources scoring 80+ on BOTH Citation Discipline AND Citation Velocity — the rare set that combines rigorous evidence-citation discipline with high-frequency citation in current discourse. The fact-checking-grade tier.

  1. 1
    U.S. Securities and Exchange Commissionsec.gov·Government

    Primary-source regulator publishing every public-company filing (13F, 10-K, 8-K, etc.) since 1934.

    SourceScore A+ · 96Discipline 98Modern Reference 95Velocity 95
    A+·96
  2. 2
    Wikipedia (English)en.wikipedia.org·Reference

    Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline.

    SourceScore A · 94Discipline 96Modern Reference 92Velocity 95
    A·94
  3. 3
    U.S. National Institutes of Healthnih.gov·Government

    U.S. federal medical research agency operating PubMed, NCBI, MedlinePlus, and trial registries.

    SourceScore A+ · 95Discipline 95Modern Reference 94Velocity 96
    A+·95
  4. 4
    Federal Reserve Systemfederalreserve.gov·Government

    U.S. central bank; primary source for monetary policy + economic data + financial-system statistics.

    SourceScore A+ · 95Discipline 96Modern Reference 94Velocity 95
    A+·95
  5. 5
    PubMedpubmed.ncbi.nlm.nih.gov·Academic

    U.S. National Library of Medicine literature index covering ~36M biomedical citations.

    SourceScore A · 94Discipline 96Modern Reference 92Velocity 94
    A·94
  6. 6
    U.S. Food and Drug Administrationfda.gov·Government

    Federal agency for food + drug + medical-device safety; primary-source approvals + safety alerts.

    SourceScore A · 94Discipline 96Modern Reference 92Velocity 94
    A·94
  7. 7
    U.S. Bureau of Labor Statisticsbls.gov·Government

    Federal statistical agency for U.S. labor + price data; CPI, employment, unemployment, productivity.

    SourceScore A · 94Discipline 95Modern Reference 93Velocity 94
    A·94
  8. 8
    U.S. Centers for Disease Control and Preventioncdc.gov·Government

    Federal agency for U.S. public-health surveillance + disease prevention; primary-source MMWR + WONDER data.

    SourceScore A · 94Discipline 95Modern Reference 93Velocity 94
    A·94
  9. 9
    U.S. Census Bureaucensus.gov·Government

    Federal statistical agency for U.S. demographic + economic data; primary-source decennial census + ACS surveys.

    SourceScore A · 94Discipline 95Modern Reference 94Velocity 93
    A·94
  10. 10
    DOI (CrossRef Resolver)doi.org·Academic

    International standard identifier resolver for academic citations (~150M+ DOIs).

    SourceScore A+ · 95Discipline 92Modern Reference 98Velocity 95
    A+·95
  11. 11
    European Central Bankecb.europa.eu·Government

    EU central bank; primary source for euro-area monetary policy + financial-system data.

    SourceScore A · 93Discipline 95Modern Reference 92Velocity 92
    A·93
  12. 12
    U.S. National Oceanic and Atmospheric Administrationnoaa.gov·Government

    Federal scientific agency for weather + ocean + climate data; primary-source forecasts + climate research.

    SourceScore A · 93Discipline 95Modern Reference 92Velocity 91
    A·93
Same list, different signal

The SourceScore Index combines all three sub-scores. You can also see this list sorted by just one of them, which can change the order and the source at the top.

By Discipline →By Modern Reference →By Velocity →

Why these 12 sources

Most sources score high on one dimension and middling on others. The fact-checking-grade tier requires BOTH: methodology-transparent rigor (Discipline ≥ 80) AND fast cross-citation in current writing (Velocity ≥ 80). When you're verifying a claim that's currently in dispute, these are the sources whose authority + recency BOTH compound.

How this list is ranked

Selection criterion: Filter: Discipline ≥ 80 AND Velocity ≥ 80; ranked by mean of those two scores. Every source on this page is hand-scored against the SourceScore methodology v0.1; tap any source to see its full breakdown across the three sub-scores and the overall Index. The list is regenerated automatically on every dataset update — no editorial promotion or reorder beyond the ranking signal above.

Frequently asked questions

Best fact-checking-grade sources for AI citation?

By the SourceScore Index, the top 5: 1. U.S. Securities and Exchange Commission (A+ 96/100); 2. Wikipedia (English) (A 94/100); 3. U.S. National Institutes of Health (A+ 95/100); 4. Federal Reserve System (A+ 95/100); 5. PubMed (A 94/100). Each is hand-scored on Citation Discipline, Modern Reference, and Citation Velocity — full ranking + breakdowns below.

Which source tops this list, and why?

U.S. Securities and Exchange Commission ranks #1, scoring A+ (96/100) on the SourceScore Index — the highest composite citation-quality score here. Primary-source regulator publishing every public-company filing (13F, 10-K, 8-K, etc.) since 1934.

How is this list ranked?

Ranked by Filter: Discipline ≥ 80 AND Velocity ≥ 80; ranked by mean of those two scores, scored against the SourceScore methodology v0.1 across Citation Discipline, Modern Reference (AI-era fitness), and Citation Velocity. Regenerated automatically on every dataset update — no paid placement or editorial promotion.

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