What is generative engine optimization (GEO)?
Generative engine optimization is the practice of improving how often and how accurately AI assistants — ChatGPT, Perplexity, Gemini, Copilot, Google’s AI Mode and AI Overview — mention, cite and recommend your brand in their generated answers.
SEO asks: does my page rank? GEO asks: does the answer name me, and which of my pages did it read?
Why it’s a separate discipline
A search result page is a list; an AI answer is a composition. The engine reads many pages, picks a few to cite, and writes a single response. Three consequences follow:
- Positions collapse into citations. There is no “rank 4” — your domain is either cited, mentioned in prose, or absent. The measurable units are mention rate and citation share, not position.
- The answer varies by who asks and where. The same prompt produces different answers per country, per US state, and over time. GEO measurement has to be geo-targeted and repeated, or the numbers are noise.
- The engine searched first. Most AI answers are grounded on live web searches the engine ran behind the scenes — the “query fan-out”. GEO therefore includes ranking for the fan-out queries, not just the user’s literal prompt.
What GEO work actually looks like
- Prompt sets, not keyword lists. Collect the natural-language questions your buyers ask (“best CRM for small agencies”), grouped by intent.
- Repeated measurement. Run the set on a schedule across engines and markets; answers drift, so one-off checks mislead.
- Source analysis. Read which pages get cited — they’re often Reddit threads, comparison posts and docs, not your homepage. Those are the pages to create or improve.
- Content for citability. Pages that state a clear claim with evidence get cited; vague marketing pages don’t.
Measuring it
The practical stack is an answer monitoring API: submit each prompt, get back the answer text, sources[], entities[] and searchQueries[], then compute mention rate and citation share per market. How to track what AI assistants say about your brand walks through the setup, and query fan-out explains the search layer underneath.
GEO doesn’t replace SEO — the fan-out searches still hit Google’s index. But the thing being optimized has changed shape: from a ranking to a citation inside a written answer.