The complete guide to optimizing content for AI citations in ChatGPT, Perplexity, Claude, and Google AI Overviews.
Generative Engine Optimization (GEO) is the practice of optimizing digital content to increase visibility and citations in AI-powered search systems and large language models. Unlike traditional SEO which targets Google's blue links, GEO targets AI systems that synthesize answers from multiple sources — including ChatGPT, Perplexity, Claude, and Google AI Overviews.
The shift from search to synthesis is accelerating. When users ask ChatGPT "What's the best CRM for small businesses?" they get a direct answer — not a list of links to explore. If your brand isn't in that answer, you're invisible to that user.
Key statistics:
ChatGPT has 800+ million users asking questions weekly
Perplexity processes millions of queries daily with real-time web search
Google AI Overviews now appear in 30%+ of search results
Research shows a 30-to-1 gap between brand recognition and organic discovery in LLMs
How AI Systems Decide What to Cite
AI citation decisions are influenced by:
1. Entity Recognition
Does the AI "know" your brand exists? This requires presence in training data, Wikipedia, knowledge graphs, and authoritative sources.
2. Retrieval Relevance
When the AI searches for information to answer a query, how relevant is your content? This depends on semantic similarity, content structure, and keyword alignment.
3. Authority Signals
Is your content trustworthy? AI systems weigh factors like domain authority, citation by other sources, and presence on trusted platforms (Reddit, GitHub, academic sources).
4. Content Structure
Is your content formatted for AI extraction? Clear definitions, structured data, FAQ format, and concise answers improve citation likelihood.
GEO Optimization Strategies
Content Optimization
Add statistics — Quantitative data increases citation likelihood by 22%
Include quotations — Credible quotes improve visibility by 37%
Cite sources — Referenced content gets 115% more visibility