GEO vs SEO: What Changes, What Stays and What to Do First

Search engine optimization is the work of getting a page into the list of results for a search, as high as possible, so that people click it. Generative engine optimization, GEO for short, is the work of getting that same page used as a source when an AI system writes the answer itself: Google's AI Overviews and AI Mode, ChatGPT search, Perplexity, Copilot and Gemini.

The two share most of their plumbing. They differ in what wins. In a list of ten results, position matters and every result gets a title and a link. In a written answer there may be three sources or none, and the engine picks passages, not pages.

Search for this comparison and half the discussion is people asking about geographic targeting. That is a different subject. Geo-targeting and local SEO are about showing up for searches tied to a place. GEO, as marketers have used the term since a 2023 research paper gave it the name, means generative engine optimization.

You will also see the same work called AEO, AI SEO, LLM SEO or LLMO, depending on who is selling it. The labels overlap heavily. Our comparison of AEO, GEO and SEO sorts out which word means what, and AEO vs SEO covers the answer-box side.

More than the sales pages suggest. Google's own guidance on AI features is blunt about it: to appear as a supporting link in AI Overviews or AI Mode, a page must be indexed and eligible to be shown in Search with a snippet. There are no extra technical requirements, no special markup and no AI text file to create.

The same document lists the practices that carry over. Allow crawling in robots.txt and in whatever CDN or hosting sits in front of the site. Make pages easy to find through internal links. Keep the important content in text. Make structured data match what a visitor can see. None of that is new, and all of it is SEO.

So a blog that already publishes useful, well-organised posts on a fast site has done most of the groundwork for GEO without calling it that. A blog with crawl errors and thin pages has an SEO problem, and GEO will not get it around that.

Four things are different enough to change how you write and how you check your site.

The first is the unit. A generative engine lifts a paragraph or two, so each passage has to stand alone: name its subject, answer one question and carry its own evidence. A page that only makes sense read top to bottom gives the engine nothing to quote.

The second is how the search happens. Google describes a technique it calls query fan-out, where one question is broken into several related searches across subtopics before the answer is written. Your page may be pulled in for a sub-question nobody typed. Posts that cover the neighbouring questions properly get more chances than posts that chase one phrase.

The third is evidence. In the GEO research paper, a team tested edits to web pages and measured how visible each page became in generated answers. The best methods raised visibility by up to 40%, and the paper found the effect varies from one subject area to another. Adding sources, quotations and statistics helped. Repeating keywords did little.

The fourth is the crawlers. OpenAI uses OAI-SearchBot to surface sites in ChatGPT search, and Perplexity uses PerplexityBot. Both companies ask you to allow the crawler in robots.txt and to let their published IP ranges through. Googlebot being welcome says nothing about whether a security rule is turning these away.

Most advice says the two never conflict. They do in places, and it is better to choose with open eyes.

Clicks are the obvious one. Pew Research Center followed the browsing of 900 US adults in March 2025. When a Google results page showed an AI summary, people clicked a traditional result on 8% of visits, against 15% without one. They clicked a link inside the summary itself on 1%. Being cited keeps your name in front of the reader, but it does not send the traffic a top position used to.

Format is another. A long, complete guide still does well in classic results. A generative engine wants the answer in the first two sentences of a section. You can serve both by opening each section with the answer and putting the detail underneath, which costs some storytelling.

Then there is access. Allowing every AI crawler helps you get cited and also lets your writing train models. The crawler names let you split the decision, since search and training use different ones, but it is a decision.

Last, where the effort goes. SEO has long rewarded links to your site. Generative engines also weigh whether other sources say the same thing about you, linked or not. Time spent being mentioned in directories, reviews and other people's articles pays in GEO in a way a link count does not capture.

If you have an afternoon, spend it in this order. The first three help classic rankings as much as AI answers.

SEO measurement is mature. Search Console gives you impressions, clicks and average position for every search, and Google counts appearances in its AI features inside the same Performance report, under the Web search type. You cannot split them out, which is a real limit, but the traffic is in there.

GEO measurement is younger. The honest method is a list of ten questions your posts answer, asked once a month in the assistants your customers use, with a note of who gets cited. Your analytics add a second signal: visits referred from chatgpt.com, perplexity.ai and gemini.google.com. Paid trackers automate the asking. Our roundup of GEO tools covers what they cost and which engines each one watches.

PixelClaw is our product, so read this part as a description, not a review. It scores every post out of 100 in five areas, and the split mirrors this article. Search engines carry 30% of the score. Answer engines carry 20%, trust signals 15% and AI discovery 15%, and those three are the GEO side: an opening answer, an FAQ, a named author, at least two sources and AI crawlers that are allowed in.

On a blog it hosts, PixelClaw also writes the robots.txt, sitemap, llms.txt and structured data, with separate switches for AI search crawlers and training crawlers. It does not track where AI answers mention you. It works on the half you control, which is the page. The GEO blogs guide goes through the writing habits in detail.