TL;DR: GEO vs SEO explained in one sentence: SEO earns you a ranking and a click, GEO earns you a citation or a recommendation inside an AI-generated answer. They run on different scoreboards, get proven with different evidence, and most businesses now need a coherent answer for both. Treating GEO as a bolt-on to your existing SEO retainer is usually why nobody can tell if it’s working.
Table of Contents
TL;DR
GEO vs SEO explained in one sentence: SEO earns you a ranking and a click, GEO earns you a citation or a recommendation inside an AI-generated answer. They run on different scoreboards, get proven with different evidence, and most businesses now need a coherent answer for both. Treating GEO as a bolt-on to your existing SEO retainer is usually why nobody can tell if it’s working.
What SEO actually optimises for
SEO was built for a web made of links. The job is simple to state: match a search intent to a page, then get that page to rank high enough, and look trustworthy enough, that someone clicks it.
The scoreboard is rankings, click-through rate, backlinks, domain authority, and keyword-to-intent matching. Every tactic in the traditional SEO playbook, from title tags to link building, exists to move one of those numbers.
That playbook made sense when the results page was a list of ten blue links and the user had to click something to get an answer. The page was the product. If you weren’t on page one, you weren’t in the conversation.
That’s no longer the whole story, and it’s not because SEO stopped working. It’s because the results page itself changed shape.
What GEO actually optimises for
GEO, generative engine optimisation, is the practice of getting your business included, cited, or recommended inside an AI-generated answer, not just ranked on a results page. Think ChatGPT, Gemini, Claude, Perplexity, and Google’s AI Overviews.
The term itself comes from a specific place: a 2024 paper by researchers at Princeton, Georgia Tech, and the Allen Institute for AI, published at ACM SIGKDD and available on arXiv as Aggarwal et al., “GEO: Generative Engine Optimization” (arXiv:2311.09735). That paper coined the term and built GEO-BENCH, the first testing framework for measuring whether content actually gets cited inside generative answers.
Worth being straight about this: the field doesn’t yet have one agreed definition. Wikipedia’s entry on generative engine optimization notes that practitioners use the term in overlapping but inconsistent ways. Anyone selling you a single, tidy, universally accepted GEO methodology is smoothing over a genuinely unsettled field. That’s not a reason to ignore it. It’s a reason to demand evidence over claims.
GEO vs SEO explained, side by side
| SEO | GEO | |
|---|---|---|
| Goal | Rank high, get clicked | Get cited or recommended inside an AI answer |
| Unit of success | Position, click-through rate | Inclusion in the answer, correct attribution |
| What winning looks like | Page one, ideally position one to three | The AI names you when someone asks the question |
| Who owns it today | Usually the existing SEO or content team | Often nobody, or bolted onto the SEO retainer |
| How you’d prove it’s working | Rank tracker, GSC clicks | Saved verbatim answers across named engines, tracked weekly |
One more distinction worth holding onto: GEO is not AEO, and it’s not LLMO. Seobility’s definition of answer engine optimisation describes AEO as optimising content to directly answer a specific question, which overlaps with GEO but isn’t identical to it. GEO is broader: it’s about whether an AI engine trusts your content enough to cite it or recommend it at all, across a whole category of questions, not just one query-answer pair. Related disciplines, distinct emphasis. We pull that apart properly in our guide to answer engine optimisation. Worth knowing the difference before you hire for it.
Why the click is no longer the whole story
Here’s the part that should worry any marketing director still reporting rankings as the headline metric: ranking first doesn’t guarantee a click any more.
Pew Research Center’s July 2025 study of Google searches found that people who saw an AI summary clicked a traditional search result in 8% of visits, against 15% of visits when no AI summary appeared. The direction of travel is clear: when Google answers the question directly on the results page, fewer people need to click through to find out more.
To be clear about what this evidence does and doesn’t say: it’s about click behaviour changing, not proof that SEO is dead, and not proof that any specific brand or agency is untrustworthy because it didn’t show up in one AI session. AI answers vary between runs, users, and sessions. A single check is one data point. It tells you something happened once. It doesn’t tell you a pattern, and it definitely doesn’t tell you whether a business is any good.
What it does tell you is this: the answer AI gives is increasingly where the decision gets made, before your website ever gets a chance to make the case.
Where GEO and SEO overlap (and why you need both)
Here’s the good news. The underlying skill set is the same for both disciplines: structured, evidence-rich, citable content. Clear headings, direct answers, named sources, up-to-date facts, and a page that’s easy for both a person and a crawler to parse.
Authority signals matter to both. Earned media, third-party citations, and a clean crawler access setup (including something as basic as a working llms.txt file where relevant) help you get found by search engines and cited by AI engines alike.
This is a portfolio decision, not a replacement decision. You’re not choosing between SEO and GEO. You’re deciding how much of your discovery budget goes toward being ranked and clicked, versus being cited and recommended, and building a team, internal or external, that can report on both without vanity metrics standing in for real evidence.
Should your SEO agency handle GEO, or do you need a specialist?
This is a genuine question, not a trick one. Boards are now asking marketing directors, in plain language, whether the business shows up when someone asks ChatGPT or Perplexity for a recommendation. Marketing directors are, understandably, asking the same question of AI tools themselves: should we ask our existing SEO agency to handle GEO, or bring in a specialist?
There’s no single right answer, but there’s a right way to judge it. Whoever handles it, generalist or specialist, should be able to show you:
- Which engines they’re actually checking. ChatGPT, Claude, Gemini, Perplexity, Google AI Mode and Google AI Overviews are not interchangeable. “We check AI visibility” without naming the engines is a sales pitch, not a method.
- How often they check. A one-off audit tells you almost nothing, because answers shift. Tracked weekly, or at a stated cadence, is the minimum for anything you’d call ongoing measurement.
- Whether they save verbatim answers as evidence, not just a dashboard score. A number on a slide is an opinion. A saved, timestamped answer from a named engine is a receipt.
- Whether they can show you a real session output, not a slide of promises. Ask to see one. If they can’t produce it, that’s your answer.
And the same reminder applies here as everywhere else in this piece: a single check, in a single session, is one data point. It says nothing final about any agency’s competence, and a provider without a slick answer today may still do the work well tomorrow. Judge the method, not one snapshot.
How to tell if a GEO claim is real (a short buyer’s checklist)
Before you sign anything, ask for these four things in writing:
1. Named engines. Which specific AI engines will be checked, and how often.
2. Verbatim receipts. Saved, dated answers from those engines, not just a summary score.
3. Scope matched to your customer journey. GEO for a healthcare provider looks different to GEO for a hotel group. Scope should follow how your actual customers ask questions, not a template.
4. No price floor as a quality signal. Judge providers on what’s included and what’s evidenced, engines named, cadence stated, receipts shown, never on whether the retainer clears an arbitrary minimum. A well-scoped, evidenced engagement beats an expensive one with no receipts, every time.
No fluff, no jargon, no vanity metrics. If a provider can’t answer all four without hedging, keep asking.
The bottom line
SEO and GEO are not rivals fighting over the same budget line. They’re two different measurement systems for two different discovery behaviours: one for people who click, one for people who ask an AI and trust the answer they’re given.
Most businesses will need a coherent answer for both within the next reporting cycle, because your customers are already doing both: searching and asking. The businesses that get shortlisted and chosen won’t be the ones with the loudest AI visibility claim. They’ll be the ones who can prove it, engine by engine, week by week, with the actual answer saved as evidence.
Ayse Durmush is an AI Visibility Expert with 28 years of brand-side experience at Virgin Media O2, Samsung, LEGO, RBS/NatWest, and ITN. She’s the author of the ChatGPT Blueprint, a member of the Anthropic Claude Partner Network, and a Claude Certified Architect. She built The GEO Agency around one principle: results over activity, one roof, one accountable team, no vanity metrics.
Ready to see where you actually stand?
If you want to see what a real, evidenced GEO check looks like, start for free with Aurora and we’ll walk you through named engines, cadence, and saved verbatim answers, not a slide of promises.
Is GEO replacing SEO?
No. GEO and SEO measure different things: SEO tracks rankings and clicks, GEO tracks citations and recommendations inside AI answers. Most businesses need both running at once, not one instead of the other.
What does GEO stand for?
GEO stands for generative engine optimisation, the practice of getting a business cited or recommended inside AI-generated answers from tools like ChatGPT, Gemini, Claude and Perplexity. The term was coined in a 2024 academic paper from Princeton, Georgia Tech and the Allen Institute for AI (arXiv:2311.09735).
Is GEO the same as AEO?
They overlap but aren’t identical. AEO, answer engine optimisation, focuses on directly answering a specific question well. GEO is broader: it’s about whether an AI engine trusts your content enough to cite or recommend you across a whole category of questions.
Can my existing SEO agency just take on GEO?
Some can, some can’t. Judge them the same way you’d judge a specialist: ask which AI engines they check, how often, whether they save verbatim answers as evidence, and whether they can show you a real session output rather than a promise slide.
Does ranking first on Google still guarantee a click?
Not reliably. Pew Research Center found that people who saw an AI summary clicked a traditional search result in 8% of visits, against 15% without one, because the answer often appears directly on the results page. This is about changing click behaviour, not proof that SEO no longer works.
How do I know if a GEO claim from a provider is genuine?
Ask for four things in writing: the specific engines checked, how often they’re checked, saved verbatim answers as evidence rather than just a score, and scope matched to how your customers actually ask questions, not a fixed price floor.
AI Visibility Expert and Founder of The GEO Agency, helping travel, hospitality and property companies win visibility in AI search. 28 years of digital marketing, brand strategy and enterprise digital transformation experience with brands including Virgin Media, O2, Samsung, LEGO, RBS/NatWest and ITN. Author of the ChatGPT Blueprint, Anthropic Claude Partner Network member and Claude Certified Architect.
