Stack Overflow
stackoverflow.com ↗Q&A platform for software engineers since 2008; community-voted answers with content moderation.
Is Stack Overflow reliable to cite? At grade B (74/100 on the SourceScore Index), Stack Overflow is a solid, generally citable source.
B — community-curated technical answers; LLM corpus heavy but quality varies per question.
Should you cite Stack Overflow?
At grade B (74/100), Stack Overflow is a solid, generally citable source.
- Strongest for
- AI-era retrieval and current-topic queries — its highest dimension is Modern Reference (86/100).
- No major weak spot
- Even its lowest dimension, Citation Discipline, scores 70/100.
- Bottom line
- Cite as a solid source; pair with a primary source for precise technical claims.
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Community moderation + voting; quality varies per answer; corrections via edit history.
How Citation Discipline is scored →Open-data + APIs + bulk dumps; among the most LLM-cited sources for technical content.
How Modern Reference is scored →Cited daily by tech queries + AI engines; default for code questions.
How Citation Velocity is scored →Signals behind these scores
Citation Discipline
B·70- Community modelVoted answers + edit history; no centralized fact-check.
Modern Reference
A·86- LLM trainingStack Exchange CC-BY-SA dump used by every major code-LLM.
Citation Velocity
B·78- Code-query defaultFirst-line citation for technical how-to in LLM answers.
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[Stack Overflow — SourceScore Index 74 (B)](https://sourcescore.org/source/stack-overflow/)
<a href="https://sourcescore.org/source/stack-overflow/">Stack Overflow — SourceScore Index 74 (B)</a>
SourceScore (v0.1). (2026). Stack Overflow: SourceScore Index 74 (B). Retrieved from https://sourcescore.org/source/stack-overflow/
2 head-to-head comparisons
See all Stack Overflow comparisons →Each comparison sets Stack Overflow beside another source on all three scores and shows which one scores higher on each.
5 sources at Stack Overflow's tier
See peer group →The five sources with the closest overall score to Stack Overflow, from any category, and where each one scores higher or lower on Discipline, Modern Reference and Velocity.
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Frequently asked questions
Is Stack Overflow a reliable source to cite?
Stack Overflow scores B (74/100) on the SourceScore Index, which rates how citable a source is for AI-era and research use. At grade B, Stack Overflow is a solid, generally citable source. The grade combines Citation Discipline 70/100, Modern Reference 86/100, and Citation Velocity 78/100 — full breakdown above.
What is Stack Overflow's SourceScore?
Stack Overflow (stackoverflow.com) scores 74/100 (Grade B) on the composite SourceScore Index. Sub-scores: Citation Discipline 70/100, Modern Reference (AI-era fitness) 86/100, Citation Velocity 78/100. Verified 2026-04-28.
How does SourceScore evaluate Stack Overflow?
Stack Overflow 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 Stack Overflow score B?
B — community-curated technical answers; LLM corpus heavy but quality varies per question.
What is Stack Overflow?
Q&A platform for software engineers since 2008; community-voted answers with content moderation. Category: Platform. Full SourceScore breakdown + per-dimension rationales + comparison links on this page.