AEO vs GEO vs SEO: what is actually different

SEO, AEO and GEO all aim to get a business found, but each one counts success in a different place: SEO in the ranked results of a search engine, AEO in the direct answer an answer engine gives, and GEO in the text a generative AI writes and the sources it cites. On AEO vs GEO, the two names describe almost the same work, and both rest on SEO. Google's guide to its AI features, last updated in July 2026, calls that work “still SEO.”

Searches comparing them are climbing. Americans type “aeo vs geo” about 1,600 times a month, more than three times as often as a year earlier, and “geo vs seo” about 2,900 times (Google Ads estimates, October 2026). If the first acronym is new to you, our guide to answer engine optimization defines it in full.

Whatever you call it, the AEO and GEO side is measured inside the answers, where rankings can't reach. Hypervisible, the software we publish, does that reading for you, on the engines the GEO column below names: ChatGPT, Gemini, Perplexity, and Google's AI Overviews and AI Mode, five engines in all.

The three terms in one table

SEO stands for search engine optimization, AEO for answer engine optimization and GEO for generative engine optimization. They differ less in technique than in what they treat as a win.

Our comparison, based on Google Search Central, the 2023 GEO paper and Wikipedia, read on October 22, 2026.
	SEO	AEO	GEO
Stands for	Search engine optimization	Answer engine optimization	Generative engine optimization
Name in use since	1997	Around 2018	November 2023, in a research paper
Aims at	Search engines such as Google and Bing	Engines that give one direct answer: featured snippets and voice assistants first, AI answers now	AI that writes an answer from several sources: ChatGPT, Perplexity, Gemini, Google AI Overviews and AI Mode
A win looks like	A high position in the results, then a click	Your brand or page being the answer, or named in it	Your brand named in the generated text, your page cited as a source
Where the work happens	Your site, and links from other sites	Your pages' answers and structure, and your facts across the web	Your pages, and the third-party pages the AI reads
How you measure it	Rankings, impressions, clicks, organic traffic	Citation rate and position in the answers	Citation rate, position, share of voice, cited sources
Free first-party data	Google Search Console	Search Console, for Google's AI features only	Search Console, for Google's AI features only

The AEO and GEO columns are close to twins. They came from different places: AEO from SEO practitioners chasing featured snippets, GEO from computer science researchers studying AI answers. In 2026, vendors and agencies sell the same service under either name, and Google's guide mentions the two in the same sentence. Pick the word your clients or your boss already use and spend the time on the work instead.

What SEO still does

SEO gets your pages crawled, indexed and ranked, and every answer engine that searches the web depends on that step. Google's guide says SEO best practices “continue to be relevant” for its AI features, because those features run on the same core ranking and quality systems as regular Search.

The conditions are concrete. Google's AI Overviews and AI Mode only cite pages that are indexed and allowed to show a snippet, and Google says there are “no additional requirements” beyond that. ChatGPT and Perplexity run their own web searches, so their crawlers need access too. A plumbing company in Phoenix whose service pages aren't indexed won't be cited by AI Mode, however well those pages are written.

SEO also still brings clicks, though fewer of them on some questions. Pew Research Center looked at the browsing of 900 American adults in March 2025. With an AI summary on the Google results page, those adults went on to a regular result in 8% of visits; without one, in 15%. That's a real drop. It's also far from zero, and whoever clicks has already read a summary.

What SEO can't tell you is whether the answer names you. A ranking report shows positions on a results page. It says nothing about the paragraph above those results, or about what ChatGPT told a buyer this morning. That gap is the reason the other two acronyms exist.

What AEO adds

AEO treats the answer as the unit of success: one reply, a handful of names, and the question of whether yours is among them.

That changes how you plan content. In SEO, one page can rank for a hundred variations of a query. In AEO you think question by question, because each question gets its own answer and that answer names only a few businesses. A tax preparer in Chicago wants to rank for “tax preparer Chicago,” of course. The more useful win is being named when someone asks which preparer handles freelancers with income in two states.

AEO also cares about your brand as a thing the engine can identify, separate from your URLs. An answer can name you without linking to you, and it can describe you wrongly. Consistent facts everywhere (name, address, hours, prices, what you do and for whom) make it easier for an engine to say the right thing. This part of AEO comes from the featured-snippet years, when Google pulled one answer from one page and its smart speakers read that answer aloud.

What GEO adds

GEO adds a research frame for answers that blend several sources, and it treats visibility as something that comes in degrees.

The name comes from “GEO: Generative Engine Optimization,” posted on arXiv in November 2023 by Pranjal Aggarwal and colleagues from IIT Delhi and Princeton University, and published at the KDD 2024 conference in Barcelona. The authors built a benchmark of queries and measured how much of a generated answer drew on each source, weighting text that appears early in the answer more heavily. By that measure, their best methods raised a source's visibility by up to 40%, and what worked varied from one subject area to another.

Two ideas from GEO carry over to everyday work. Presence in an answer has a scale: named first with a full sentence is worth more than a passing mention at the end. And because generated answers mix sources, the pages other people write about you count as much as your own. A Reddit thread or a trade publication's comparison can be what decides if your brand gets named. Our guide to generative engine optimization explains why a mention and a source citation need to be tracked separately.

GEO also has to be read engine by engine. ChatGPT, Gemini, Perplexity and Google's two AI features use different models and different searches, and the same question can get a different shortlist in each. Some practitioners add a fourth name, LLMO, for the same work aimed at large language models; we cover it in LLM optimization.

Do you need three strategies?

No. You need one plan with three checks: can search engines find and rank the page, does the page answer the question plainly, and do AI answers name you and cite the sources you've worked on.

Where to put the effort depends on how your customers buy.

A local service business, such as an HVAC company in Columbus, Ohio, gets the most from its Google Business Profile, its reviews and service pages that answer cost and financing questions. Then it checks whether AI Mode and ChatGPT name it for “best HVAC company in Columbus for a heat pump install.”
An online store should start with a clean Merchant Center feed and product pages with real specifications, since Google says AI answers about products can draw on Merchant Center. After that, the useful question is which review and comparison sites the engines cite for its category.
A B2B software company lives on “best X for Y” and “X vs Y” questions. Its own comparison pages, its profiles on software review sites and a public pricing page tend to matter more there than another blog post.

Be careful with anyone who sells AEO or GEO as something unrelated to SEO, or who promises a fixed place in AI answers. Google's guide tells site owners to give AEO and GEO advice from third parties the same scrutiny as any SEO advice. Answers shift between sessions, so a locked-in spot doesn't exist. Being cited more often is something you can work toward, and measure. NEXUS GEO, the agency behind Hypervisible, describes how it runs both disciplines together in GEO vs SEO: what's different in 2026.

How to measure each one

Measure SEO in Search Console and your analytics. Measure AEO and GEO in the answers themselves, by putting the same questions to each engine on a fixed schedule.

Based on Google Search Central documentation, read on October 22, 2026.
	SEO	AEO and GEO
Main numbers	Position, impressions, clicks, click-through rate, conversions	Citation rate, position in the answer, share of voice, cited sources, tone
Where the data comes from	Search Console, analytics, rank trackers	The answers: each engine asked the same questions, again and again
What Google shows you	Performance report; AI Mode clicks are counted in the “Web” search type	Generative AI performance report: impressions of your own pages in Google's AI answers, by country
Blind spots	Nothing about what an AI answer says	Varies between sessions, so single readings mislead

Don't expect the two sides to move together. A page can hold the top organic spot and never be cited in the AI answer above it, and a brand can be named in ChatGPT on the strength of someone else's review page. If you only watch rankings, you'll miss both.

Tracking AEO and GEO with Hypervisible

For the right-hand column of that table, we recommend Hypervisible, the software we publish. NEXUS GEO, a French GEO agency, built it from data from Google and the AI engines, and it works alongside Search Console.

Coverage is the main reason. Google AI Overviews and AI Mode, where SEO and GEO meet, come with every plan alongside ChatGPT, Gemini and Perplexity, and each engine gets its own figures. That matters when one question gets a different shortlist in each engine.

The report is the next one. It shows how often you're cited, where your name usually sits in the answer, how you compare with competitors on the very same answers, the sites the engines cite, and the wording and tone used about you. On a paid plan, the list goes back to the engines every Monday and the change appears in points, so each week is compared with the last on equal terms (pricing). It also treats the US, the UK, France and Germany as separate markets, each questioned in its own language.

There are limits: a reading once a week, and nothing on Claude or Copilot. A first reading can come from the free AI visibility checker, also reachable from the scan page. Ten questions, half about your sector without your name and half with it, go to each of the five engines. Expect 5 to 10 minutes for the 50 answers to be read; no card details are needed, and the results remain available in your account.

Your brand

The free analysis asks 10 questions to five AI engines (ChatGPT, Gemini, Perplexity, Google AI Overviews and AI Mode), reads the 50 answers in 5 to 10 minutes and keeps your dashboard in your account.

Frequently asked questions

What do SEO, AEO and GEO stand for?

SEO stands for search engine optimization, the work of ranking pages in search results. AEO stands for answer engine optimization, getting your brand or page chosen as the direct answer to a question. GEO stands for generative engine optimization, getting named and cited in answers written by AI such as ChatGPT, Perplexity, Gemini and Google's AI Overviews and AI Mode. In 2026, AEO and GEO describe nearly the same work.

Is SEO dead now with AI?

No. AI answers built from web searches can only cite pages a crawler has reached and indexed, and Google wrote in its July 2026 guide that SEO best practices stay relevant for its AI features. Clicks have dropped on some questions: Pew Research found that in March 2025, Google users clicked a regular result 8% of the time when an AI summary appeared and 15% when none did. SEO still decides whether your pages can be found and cited at all.

Which one should a small business focus on?

Start with SEO basics, because AI answers depend on them: indexed pages, a complete Google Business Profile, reviews and pages that answer customers' real questions. Then check whether ChatGPT, Gemini, Perplexity and Google's AI answers name you for the questions your customers ask, which is the AEO and GEO side. A small business doesn't need separate plans for each acronym, only one plan checked in both places.

Are AEO and GEO the same thing?

Nearly. AEO, answer engine optimization, came from SEO practitioners around 2018, when the goal was featured snippets and voice answers. GEO, generative engine optimization, was coined in a 2023 research paper on AI-generated answers. Both now mean the same job, making sure AI answers mention your brand and link to your pages, and Google's guide lists the two terms together. The tactics and the ways to measure them are the same.

Is GEO better than SEO?

Neither is better, because GEO builds on SEO. An AI that looks things up online works from pages search engines have already found and ranked, so a site with weak SEO rarely gets cited. GEO adds a second goal: being named in the AI's answer and being one of the sources it cites. Most businesses need both, measured separately, since a top ranking doesn't always come with a mention in the AI answer.

How do you measure AEO and GEO results?

Hypervisible, the software we publish, is what we recommend: it puts the same questions to ChatGPT, Gemini, Perplexity, Google AI Overviews and Google AI Mode every Monday and reports, engine by engine, your citation rate, position, competitors and cited sources. We suggest it because both of Google's AI features are in every plan. Keep Search Console for the SEO side, and its Generative AI report for your pages' impressions in Google's AI answers.