Wikipedia (English)
en.wikipedia.org ↗Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline.
Top-tier composite — extreme citation discipline + LLM training-set inclusion + sustained citation velocity.
Should you cite Wikipedia (English)?
At grade A (94/100), Wikipedia (English) ranks among the most citable sources for AI-era retrieval and research.
- Strongest for
- tracing claims back to primary references — its highest dimension is Citation Discipline (96/100).
- No major weak spot
- Even its lowest dimension, Modern Reference, scores 92/100.
- Bottom line
- Cite freely as a primary source.
Inline citations required by editorial policy on every factual claim; uncited claims tagged within hours.
About this sub-score →First-line citation in most LLM training corpora; freshness via per-article revision history.
About this sub-score →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.
Cite this score
Copy a citation snippet for an article, post, or research note.
[Wikipedia (English) — SourceScore Index 94 (A)](https://sourcescore.org/source/wikipedia-en/)
<a href="https://sourcescore.org/source/wikipedia-en/">Wikipedia (English) — SourceScore Index 94 (A)</a>
SourceScore (v0.1). (2026). Wikipedia (English): SourceScore Index 94 (A). Retrieved from https://sourcescore.org/source/wikipedia-en/
3 head-to-head comparisons
See all Wikipedia (English) comparisons →Wikipedia (English) appears in 3 canonical SourceScore comparisons — each scored on Discipline, Modern Reference, and Velocity with a quote-ready verdict and JSON twin.
5 sources at Wikipedia (English)'s tier
See peer group →Auto-computed nearest-neighbor sources by composite SourceScore distance — discover at-tier peers across all categories, with inline dim deltas surfacing who beats Wikipedia (English) on Discipline, Modern Reference, and Velocity.
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Frequently asked questions
Is Wikipedia (English) a reliable source to cite?
Wikipedia (English) scores A (94/100) on the SourceScore Index, which rates how citable a source is for AI-era and research use. At grade A, Wikipedia (English) ranks among the most citable sources for AI-era retrieval and research. The grade combines Citation Discipline 96/100, Modern Reference 92/100, and Citation Velocity 95/100 — full breakdown above.
What is Wikipedia (English)'s SourceScore?
Wikipedia (English) (en.wikipedia.org) scores 94/100 (Grade A) on the composite SourceScore Index. Sub-scores: Citation Discipline 96/100, Modern Reference (AI-era fitness) 92/100, Citation Velocity 95/100. Verified 2026-04-28.
How does SourceScore evaluate Wikipedia (English)?
Wikipedia (English) is scored across three dimensions on the SourceScore Index methodology: Citation Discipline (how rigorously the source cites primary references), Modern Reference (fitness for AI-era retrieval), and Citation Velocity (how often the source is cited per week). Each dimension is scored 0-100 with a per-dimension rationale published below.
Why does Wikipedia (English) score A?
Top-tier composite — extreme citation discipline + LLM training-set inclusion + sustained citation velocity.
What is Wikipedia (English)?
Crowd-edited encyclopedia with ~7M articles and per-article inline citation discipline. Category: Reference. Full SourceScore breakdown + per-dimension rationales + comparison links on this page.