GEO vs SEO: What’s the Difference, and Where Should Your Effort Go?

Author - Ben Foster

Ben, CEO of The SEO Works, brings over 25 years of experience in digital growth, marketing and AI strategy. A featured thought leader in publications like Forbes and Sky News, he is passionate about driving growth through digital innovation.

Someone in the leadership meeting asks, “Are we doing GEO?” You know it has something to do with ChatGPT. You’re fairly sure your SEO covers some of it. But you’re not certain how much, so you need to say “I’ll get back to you”.

Here’s the short answer. SEO (search engine optimisation) earns your pages rankings and clicks in search results. GEO (generative engine optimisation) earns your brand mentions and citations inside AI-generated answers, in tools like ChatGPT, Gemini, Copilot and Google’s AI Overviews.

They’re different jobs, but they stand on the same foundations, and the overlap is much bigger than the noise around GEO suggests. This guide covers where they differ, where they’re really the same work, and how to split your effort without paying for everything twice.

What’s the Difference Between GEO and SEO?

SEO is the work of getting your pages to rank in search engines, so people click through to your site. You measure it in rankings, clicks, traffic and the enquiries or sales that follow.

GEO is the work of getting AI tools to mention, recommend and cite your business when someone asks them a question. Often there’s no click at all. The person reads the answer, sees your name, and maybe searches for you later.

Think of SEO as getting your shop onto the high street, and GEO as getting the locals to recommend you when someone asks for directions.

	SEO	GEO
Where you show up	Search results pages (Google, Bing)	Answers from ChatGPT, Gemini, Copilot, Perplexity, Google AI Overviews and AI Mode
What winning looks like	A top ranking and a click	Being named, recommended or cited in the answer
What people type	Shorter searches, like “office chairs Leeds”	Longer questions, like “what’s a good ergonomic chair for someone with back pain under £400?”
What you measure	Rankings, clicks, sessions, conversions	Mentions, citations, share of answers, AI referral sessions, conversions
What it rests on	Crawlable pages, relevant content, links, authority	Largely the same, plus consistent information about your brand across the web and answers that are easy to lift
Does a click happen?	Usually	Often not

Is GEO the Same As AEO?

In practice, yes. GEO, AEO (answer engine optimisation), AI SEO, LLMO (large language model optimisation) and AI search optimisation are all names for the same broad job – making your business easy for AI tools to find, understand and recommend.

If there’s a difference, it’s mostly history. AEO was the older term, used when the focus was featured snippets and voice assistants like Alexa giving one short answer. GEO arrived with generative AI, which writes longer answers pulled from many sources.

The day-to-day work has since merged, which is why our AI SEO services share the same methods.

There is one naming convention to be aware of. “AIO” sometimes means AI optimisation and sometimes means Google’s AI Overviews. And if an agency offers GEO and AEO as two separate packages, it’s fair to ask what’s actually different about them.

How Much Does AI Search Matter Right Now?

This is where it helps to look at real numbers rather than headlines. We analysed 95 commercial business websites worldwide over the 12 months from September 2025 to August 2026. You can read the full method in our AI referral traffic benchmark.

Three findings matter most for the GEO vs SEO question:

• Organic search is still far bigger – it sent 39 times more traffic than AI assistants across the sample. To give some context, a 5% improvement in organic search performance would deliver more additional conversions than doubling AI referral traffic.
• AI visitors often convert better, but not always – on average they converted at 7.18% against 6.08% for organic. Yet on 23 of the 63 sites with enough data, AI traffic converted worse, and B2B product businesses as a group saw a lower rate from AI (0.62 times their organic rate).
• It’s growing – AI referrals rose from 2.29% of organic sessions (September 2025 to April 2026) to 3.04% from May 2026 onwards. That’s only four months of data, so treat the trend as provisional.

So AI search is small, but growing and often valuable per visitor. It isn’t a reason to stop investing in SEO.

One thing to keep in mind when you read your own numbers. Clicks from Google’s AI Overviews and AI Mode are counted as ordinary organic traffic in Google Analytics.

So “AI traffic” in the figures above means visits from assistants like ChatGPT, Gemini and Copilot. Google’s own AI answers sit inside your organic figures, which is another reason the two disciplines are hard to pull apart.

Why GEO and SEO Usually Rise and Fall Together

AI tools don’t invent their sources. Google’s AI Overviews draw on pages Google has already crawled and ranked, and assistants like ChatGPT search the web and read the pages they find. If those pages are hard to crawl, vague or untrusted, they’re unlikely to be picked, whichever system is doing the picking.

That’s why the groundwork is shared:

• Pages that can be reached – by Googlebot and by AI crawlers alike.
• Clear, direct answers – content that says what you do, for whom, and how, near the top of the page.
• Authority and trust – links, reviews and mentions from sources people already rely on.
• Consistent facts – the same name, services, locations and description wherever your business appears.

Our benchmark points the same way. Across the sample, sites whose organic traffic grew tended to see their AI referrals grow too (a correlation of +0.557). That shows the two move together.

Our campaigns see a similar pattern. On our AI search campaign for DHL, ChatGPT referral traffic rose 121% and AI Overview citations rose 287% quarter on quarter, while organic revenue grew 62%.

The work behind it included expanding destination pages, strengthening technical foundations for crawlers, and adding the detailed shipping guidance people and AI tools were looking for.

We saw it on our own site too. Our GEO strategy took AI referrals from around 5 a month to over 100 in less than a year, a 20x increase, and our organic visibility grew by 14% over the same period.

Where GEO Asks for Something Extra

None of that means GEO is SEO with a new badge. There are a few areas where it asks for more, or for something different.

• Mentions away from your own site. AI answers lean on what other people say about you. Reviews, industry directories, “best of” lists, forum threads and press coverage all feed in. A mention without a link will still shape an AI answer.
• Consistent brand information. If your website says one thing, your Google Business Profile says another and an old directory listing says a third, AI tools can end up describing you inaccurately. Tidying this up isn’t glamorous, but it’s often one of the first jobs on the list.
• Question-led content. People ask AI tools longer, more specific questions and ask them to compare options. Pages that answer those questions directly, in plain language, are easier to cite. For a Rotherham seating manufacturer, we took 60.6% share of voice in AI Overviews by building on their established SEO, making sure each search had a clear page that answered the buyer’s question, from “auditorium seating recommended providers” to “what is a bleacher seat”.
• AI crawler access. Check that your robots.txt file and any bot protection (Cloudflare, for example) aren’t blocking crawlers such as GPTBot, OAI-SearchBot, ClaudeBot and PerplexityBot unless you mean to. You may also hear about llms.txt. It’s an emerging convention. Google says its Search ignores these files, and there’s no confirmed evidence yet that other AI tools rely on them either.
• Visibility without a click. Because many AI answers never send a visitor, you need to know if AI tools mention you at all. For a pool rental marketplace, we tracked AI Overviews alongside normal rankings, and their brand appeared in all tracked AI Overviews, with a 91.5% share of voice against competitors.

If you want the practical side of getting mentioned, our guide on how to appear in ChatGPT answers goes further, and our generative engine optimisation services page explains how we approach it.

So Where Should You Put Your Effort?

It depends on where you’re starting from.

If your organic search isn’t working yet, fix that first. It still sends the bulk of your traffic, and AI visibility tends to follow it. A site that Google struggles to crawl or trust is unlikely to be recommended by an AI tool.

If your organic search is in good shape, add GEO work alongside it. Start with the gaps that are specific to AI like brand consistency, mentions on third-party sites, question-led content and crawler access. Most of these build on what your SEO has already put in place, so you’re extending the work rather than starting again.

It usually makes sense for one team to handle both. So much of the work overlaps that splitting it between two suppliers can mean paying twice for the same technical fixes and content. That’s how we run AI SEO at The SEO Works – as part of the same integrated search strategy.

How To Measure AI Traffic Alongside Organic

Remember, AI answers won’t always drive clicks. Someone might read a recommendation in ChatGPT, remember your name, and search for you on Google a week later, and that visit will show up as organic or direct traffic, not AI. So your analytics will only ever show part of what GEO is doing for you. 

But if you want to see how many visits AI tools are sending you, and how those visitors behave compared with people arriving from Google, you can set that up in Google Analytics 4 (GA4) in a few minutes.

From May 2026 onwards, GA4 has a built-in AI Assistant channel in its default channel group. Google describes it as traffic from “sources like ChatGPT, Gemini, DeepSeek, Copilot, or Grok” (Google’s channel definitions).

1. Go to Reports, then Acquisition, then Traffic acquisition.
2. Make sure the table is set to Session default channel group.
3. Compare the Organic Search and AI Assistant rows for sessions, engagement and key events.

Before May 2026, the AI Assistant channel doesn’t hold any data, so you’ll need a filter. In an Exploration, add Session source as a dimension and filter it to partially match this regular expression:

bard|chatgpt|openai|claude|copilot|gemini|perplexity|grok

That’s the same filter we used for our benchmark. If you want to set this up on your data, our guide to tracking ChatGPT traffic in GA4 walks through it.

A few blind spots apply either way…

• Google says the AI Assistant channel “excludes Google’s AI Overviews and AI Mode”. Those clicks stay in Organic Search.
• AI visits that arrive without referrer information, such as some in-app browsers or copied links, still land in Direct.
• Many AI answers mention you without sending anyone to your site. Analytics can’t see those, so track your mentions separately.

GA4 counts key events rather than people, so treat conversion figures as an upper limit on real enquiries. It’s worth checking your key events are set up sensibly before you compare the two channels.

GEO vs SEO: Common Questions

Is SEO dead because of AI?

No. In our benchmark, organic search still sent 39 times more traffic than AI assistants. AI search is growing, and Google’s own AI Overviews sit on top of its normal results, but the work that earns organic rankings is also most of what earns AI visibility.

Google says the same, its AI features in Search are “rooted in our core Search ranking and quality systems.”

Will GEO replace SEO?

Not on current evidence. They’re better thought of as two outcomes of largely the same work. GEO adds some extra focus, such as tracking mentions and building a consistent presence on other sites, but it relies on the foundations SEO puts in place.

Do I need a separate GEO agency?

No. Because the two overlap so much, a separate GEO supplier often ends up redoing technical and content work your SEO team already handles. What matters is that whoever does your SEO understands AI search and can show you how they measure it.

See How Visible You Are in AI Answers

If you’d like to know how AI tools currently describe your business, and where your SEO and GEO gaps are, request our free AI Visibility audit. We’ll show you where you’re mentioned, where competitors are recommended instead, and what to fix first.