Generative engine optimization (GEO) is the work of getting your brand named and cited in AI answers. It builds on SEO rather than replacing it.
Short answer: GEO matters now because more questions end inside an AI answer. OpenAI said at its 29 September 2026 DevDay that ChatGPT has more than 1.2 billion weekly users (The Verge), and Pew Research found Google users clicked a result in 8% of visits when an AI summary appeared, against 15% when none did (Pew Research Center, March 2025 data). What brand teams should do is concrete: measure which buyer questions name you, find out why competitors get named instead, and publish pages that answer those questions better.
Where does the term GEO come from?
"Generative Engine Optimization" was coined in a 2023 research paper by Aggarwal et al., published at KDD 2024 (arXiv). The authors tested nine ways of rewriting web pages and measured how visible each page became in AI-generated answers. Adding citations, quotations and statistics did best, with 30–40% relative gains on their benchmark. Keyword stuffing, the old SEO trick, did poorly.
The lesson isn't a hack. It's that AI answers favour sources that are specific, checkable and easy to quote.
What changed when search became a conversation?
A results page gives you ten links and lets the reader choose. An AI answer chooses for them, usually naming two to five brands, and the reader often stops there. Being on page one is no longer the same as being in the answer.
But the inputs haven't changed as much as the hype suggests. Assistants such as ChatGPT, Perplexity, Gemini and Claude can search the web while they answer. Google says its AI Overviews and AI Mode use the same index as search, run several related searches before answering, and need "no additional requirements" beyond normal SEO best practice (Google Search Central). A page that can't be crawled, indexed or understood won't be cited either.
How is GEO different from SEO?
SEO | GEO | |
|---|---|---|
Goal | Rank a page in search results | Get your brand named or cited in an AI answer |
Unit you track | Keywords and positions | Prompts, mentions and cited sources, per engine |
Main metrics | Rankings, clicks, CTR | Mention rate, share of voice, accuracy of what AI says |
Off-site signals | Backlinks | Mentions on the reviews, lists and forums that answers cite |
What they share | Crawlable, indexed, genuinely useful pages that answer the question | |
Big SEO suites have already added GEO metrics: Semrush's AI Visibility Toolkit ($99 a month per domain, checked 5 Oct 2026) and Ahrefs Brand Radar both report brand mentions in AI answers (Semrush, Ahrefs). For the wider tool market, see AI SEO Tools: The Definitive Overview.
What should brand teams do right now?
Pick 20 buyer prompts. The questions people ask before they buy: "best [category] for [use case]", "[competitor] alternatives", "[category] pricing".
Set a baseline. Run them in ChatGPT, Gemini, Perplexity and Claude, plus Google AI Mode if Google drives your traffic. Log who is named and which sources are cited.
Read the sources. When a competitor is named, open the pages the answer cites. Usually it's a comparison, a review site or a list that covers them and not you.
Fix the pages. Publish or upgrade the page that answers each gap prompt directly, with prices, steps, comparisons and dates. Correct any outdated facts about you on your own site and your main profiles.
Check crawler access. Make sure robots.txt and your CDN don't block the search crawlers you want, such as OAI-SearchBot for ChatGPT search and PerplexityBot.
Re-measure monthly. Use the same prompts and record the date, because answers also move on their own.
A recommendation gap template keeps steps 2 to 4 in one sheet, and why your brand disappears when AI answers a question goes deeper on step 4.
What GEO can't promise
No one controls what a model says. Answers vary from run to run, models are updated without notice, and no vendor can guarantee a mention. What you can control is whether accurate, specific pages about your brand exist and can be found. Judge GEO work by trend lines over months, not by a single check.
To see where you stand today, run the free AI visibility audit. It takes no signup and about 30 seconds, and shows whether AI models know your brand, who they recommend instead and which content gaps to close first.