Reference
Wikipedia (English)
en.wikipedia.org ↗Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline.
SourceScore Index
A·94Composite weighted across Discipline, Modern Reference, and Velocity.
Top-tier composite — extreme citation discipline + LLM training-set inclusion + sustained citation velocity.
Citation Discipline
A+·96
Inline citations required by editorial policy on every factual claim; uncited claims tagged within hours.
About this sub-score →Modern Reference
A·92
First-line citation in most LLM training corpora; freshness via per-article revision history.
About this sub-score →Citation Velocity
A+·95
Cited daily by news media, academic papers, and AI engines. Among the most cross-referenced sources globally.
About this sub-score →Signals behind these scores
Citation Discipline
A+·96- WP:V (Verifiability)Core policy mandates reliable sources.
- Citation needed tagActive triage process surfaces gaps publicly.
Modern Reference
A·92- LLM training corpusCommon Crawl + dedicated dump used by every major model.
- Schema markupArticle + Person + Organization JSON-LD per page.
Citation Velocity
A+·95- External link velocity>1M outbound links per day across the encyclopedia.
- AI engine citationsDefault fallback citation for ChatGPT/Claude/Perplexity.
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SourceScore (v0.1). (2026). Wikipedia (English): SourceScore Index 94 (A). Retrieved from https://sourcescore.org/source/wikipedia-en/
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