GEO vs SEO: Why Ranking on Google Isn't Enough Anymore

Fewer than 10% of the sources AI tools cite also show up in Google's top 10. GEO (Generative Engine Optimisation) is the work of getting your content cited by ChatGPT, Perplexity and Google AI Overviews. If you only aim at Google, you miss the fastest-growing way people search.

What is GEO and why does it matter?

A few years ago, page one of Google was the whole game. You did your keyword research, built your backlinks, ticked the page boxes and waited. Then the traffic came.

That model still works. But it no longer covers everything.

When someone types a question into ChatGPT today, they don't get ten blue links. They get one answer. The AI builds it from several sources, with citations for the claims that needed them. If your brand isn't one of those citations, that person never hears of you.

Generative Engine Optimisation is how you make sure they do. You shape your content so AI tools can read it, pull out the right answer and credit it to you.

The shift is huge. ChatGPT crossed 400 million weekly active users in early 2025. Perplexity serves more than 100 million queries a week. Google launched AI Overviews in Australia in 2024, and they now appear on most searches. These are big, mainstream tools. They're where search is heading.

Here's the hard part. The sources AI tools cite look almost nothing like the sources Google ranks. An Ahrefs study of 15,000 queries looked at this. Only around 12% of the sources cited by ChatGPT, Gemini and Copilot also appear in Google's top 10 for the same search. So there are two almost separate worlds, running side by side.

If you only work on one, you are playing half the game.

How does GEO differ from SEO?

They differ less than you'd hope, and more than you might think.

The basics overlap. Both reward content that is expert, accurate and well laid out. Both punish thin content, stuffed keywords and a poor experience for the reader. If your site does SEO well, you have a strong head start on GEO.

But they work differently in a few key ways.

SEO aims at ranking signals. Google weighs hundreds of things. These include links from other sites, page speed, keywords, Core Web Vitals and E-E-A-T, which is Google's test of experience and trust. You're trying to please a robot. It then shows your page to a person, who decides whether to click.

GEO aims at being easy to quote. AI tools don't rank pages. They read them, find the most useful answer and build a reply from it. Your job is to make the answer obvious. Put it first. Say it clearly. Lay out the rest so an AI can check it and see where it fits.

Backlinks vs brand mentions. Backlinks, the links other sites make to yours, are the money of SEO. For GEO, research suggests mentions of your brand across the web matter more. A 2025 study measured this. Brand mentions on the web had a 0.664 link with AI search visibility, compared to just 0.218 for backlinks. That is a big shift. Being talked about now matters more than being linked to.

Position zero works differently. In SEO, you fight for the featured snippet, the answer box at the top of Google. In GEO, the prize is being the source the AI cites inside its answer. That citation might not even include a link. It might just be your name. But it still shapes how people see you.

What does the research actually say?

GEO research is young. Still, the findings agree enough for you to act on them.

The first-30% rule. Research from late 2024 found that 44.2% of all AI citations come from the first 30% of a page's text. So the start of your page carries far more weight than the rest. That is why answer capsules matter. An answer capsule puts the core answer in your first 100 words. It is a smart structure choice as much as a style choice.

Answer-first pages get cited far more often. Some pages open with a direct, factual answer to the page's main question. AI tools cite those pages far more than pages that hide the answer. You can measure this: 44.2% of AI citations come from the first 30% of a page's text.

Where your brand is mentioned matters. The same research looked at brands mentioned on four or more different platforms, such as YouTube, LinkedIn, Reddit, Medium and news sites. Those brands were 2.8x more likely to appear in ChatGPT answers. YouTube had the strongest link, at 0.737. Weekly LinkedIn activity also went with higher AI visibility. So the way you share your content now affects whether AI sees you.

Fresh content keeps paying off. Content updated within 30 days gets 3.2x more AI citations than similar content left alone for six months. So when you update your top posts with current data, you help your readers and your GEO at the same time.

Structured data makes your content easier to read. FAQPage, Article, HowTo and ItemList schema are labels in your page code. They tell AI tools what kind of content it is and how it is laid out. They don't push up your Google rank. They help AI read the page. The easier your content is to read, the more often AI cites it correctly.

How do you implement GEO?

Here is the practical part. If you already have content, you won't need to start again.

1. Add answer capsules to every page and post. Your first paragraph should give the core answer straight away. Skip the warm-up. Skip lines like "in this article, we'll explore." Give the answer. If the page is about freelance copywriter rates, say what the rates are in sentence one. If it's about AHPRA compliance, state the key rule in sentence one.

2. Create an llms.txt file at your domain root. This is a plain-text file that AI tools read to understand your site. Think of it as a robots.txt for AI. Instead of permissions, it holds plain facts about who you are, what you do and what your content covers. Keep it factual. It is no place for a sales pitch.

3. Write your H2 headings as questions. AI tools pull out question and answer pairs from a heading and the paragraph under it. "How much does a freelance copywriter cost?" is easy to pull out. "Pricing" is not. Questions also match how people type searches, so they help your SEO at the same time.

4. Add FAQPage schema to every post with a FAQ section. Pair it with a real FAQ section at the bottom of your page. Use 3 to 5 questions with direct answers, marked up with FAQPage code.

5. Let AI crawlers in through your robots.txt. Crawlers are the robots that read your site. Check that you're not blocking GPTBot, ClaudeBot, PerplexityBot or Google-Extended by mistake. Some default WordPress setups do. If you block these crawlers, your content never reaches the AI tools at all.

6. Share your content across platforms. Post excerpts on LinkedIn. Join in on relevant Reddit groups. Republish your strongest posts on Medium or Substack. You are doing this for brand mentions more than backlinks. Each place your name appears correctly helps AI tools feel sure about who you are and what you know.

7. Update your top posts monthly. Even small updates count. You might add a current stat or refresh a comparison table. Each one tells AI the page is fresh. Update the dateModified in your Article schema at the same time.

What does this mean for regulated industries?

Healthcare, law and other closely watched fields face a special challenge here. AI tools use their own quality filters on sensitive topics. They play down guesswork. They favour content that looks expert, sourced and factual.

For your clinic, this is a real opening. Make your content accurate, well sourced and clearly signed by a named author with stated training. That kind of content does better in AI answers than vague, unsigned content from less careful competitors.

Picture a physio clinic that publishes clear, rule-aware content with a named author. It will get cited more often than one turning out generic wellness copy. A telehealth brand that puts its rule references in the main text, and not just a footnote, makes its claims easier for AI to check and cite.

GEO also lines up well with the AHPRA ad rules and the TGA advertising code. Both ask for content that is factual, backed up and credited. That is the bar for staying within the rules, and it is also the bar for AI citations. So the same work brings you two benefits.

The bigger point is this. Health businesses have spent years being careful about what they claim. That care creates the kind of expert, well-sourced content GEO rewards. So the effort you put into rule-safe content pays off beyond just keeping you safe.

If you work in a regulated field and need content that works for Google and AI tools without adding risk, take a look at how I approach this work. Or start a conversation directly.