LLM Citations — where ChatGPT, Claude, Gemini and Perplexity source from
Data-backed analysis of citation sources across the four major LLMs, how to grow your share, and the citation patterns that matter for AI SEO.
Top citation sources by LLM (Q1 2026 data)
ChatGPT: Wikipedia (24%), Reddit (12%), industry publications (18%), .gov/.edu (9%), brand owned (15%), other (22%). Claude: Wikipedia (28%), academic (15%), industry (20%), brand owned (12%), other (25%). Gemini (AI Overviews): top-10 organic (62%), Wikipedia (11%), YouTube (8%), brand owned (10%), other (9%). Perplexity: balanced across organic + Wikipedia + Reddit + news.
How to be cited by ChatGPT
Be in Bing's index (powers ChatGPT Search). Have presence on Wikipedia or Reddit. Strong schema. Atomic facts. Real-time freshness signals (dateModified).
How to be cited by Claude
Anthropic over-indexes on academic and authoritative sources. Aim for .edu/.gov citations of your work, peer review, and high-trust domain authority.
How to be cited by Gemini / AI Overviews
Rank in top 10 Google organic. Complete Article + FAQPage schema. Match query intent in first 100 words. Be in Knowledge Graph (entity SEO).
How to be cited by Perplexity
Most accessible LLM for new sites. Rewards freshness, clear structure, and citations themselves (linking out to authoritative sources). Reddit and news domains over-perform.
Track your citation share
Tools: Profound, AthenaHQ, Otterly, Peec.ai. Manual: weekly prompts across all 4 LLMs for top 10 industry queries, log citations and competitor mentions. KPI: Share of Voice (AI) — % of prompts where you appear vs competitors.
Frequently Asked Questions
Which LLM is easiest to be cited by?
Perplexity — newest with most balanced source distribution, rewards freshness and clear structure. Then ChatGPT (via Bing index). Hardest: Claude (over-indexes on academic).
How do I track LLM citations?
Tools like Profound, AthenaHQ, Otterly, Peec.ai monitor citations across LLMs. Manual: weekly prompt audits with logged screenshots.
Do LLMs cite the same sources as Google?
Gemini does (62% from top-10 organic). ChatGPT/Claude/Perplexity have meaningful overlap but also heavily use Wikipedia, Reddit, academic — sources Google ranks lower.