GEO

GEO (Generative Engine Optimization) is the discipline of getting your brand cited inside answers from generative AI search — ChatGPT, Perplexity, Google AI Overviews and the like. It exists because the search interface flipped: the game used to be ranking in the top ten links, now it is being quoted inside a single paragraph of synthesised text. As zero-click behaviour climbed, marketers stopped optimising purely for rank and started asking a sharper question — does the answer even mention us?

Mechanically it helps to think in two stages. First, the model receives a query and pulls candidate sources from a mix of pretraining and live retrieval. Second, it picks the sentences that look factual, structured and trustworthy, weaves them into the response, and surfaces attribution. GEO work, in turn, splits into two tracks: getting your pages into the candidate pool in the first place, and making sure the content is shaped so the model is comfortable lifting from it.

For marketers the stakes are real. More buying journeys now end before a click ever happens, which means brand awareness gets decided inside the answer. Miss the answer and you miss the consideration set. KPIs are shifting accordingly — from traffic and CTR toward citation rate, share of voice, and the number of category prompts where your brand is named. Villion tracks these signals weekly across ChatGPT, Perplexity and AI Overviews so the trend is visible at a glance.

Surfaces behave differently and you should treat them that way. ChatGPT Search shows citation cards next to the answer, Perplexity footnotes every sentence, and AI Overviews lean on extracted summaries above the blue links. GEO, AEO and LLMO are mostly synonyms in day-to-day use: GEO is the umbrella, AEO emphasises answer boxes, and LLMO leans on the question of what the model 'knows' about your brand. Pick whichever fits your audience and stay consistent.

A common misread is that GEO replaces SEO. The opposite is closer to the truth. To be cited, your pages still need to be indexable, authoritative and structured — classic SEO is the foundation GEO sits on. Another trap is treating one citation as a permanent win. Models do not return the same sources every time, so any honest measurement runs the same prompt repeatedly and reports stability, not just presence.

If you are getting started, the highest-leverage moves are usually three. Tighten the one-sentence definitions on your core brand and product pages. Audit your robots policy for GPTBot, PerplexityBot, ClaudeBot and Google-Extended so you are not invisibly excluded. Then build a fixed prompt set of 30 to 50 category questions and measure citation rate against it monthly — that becomes the GEO equivalent of a keyword rank dashboard.