GEO vs SEO: What Changes, What Doesn't, and Will AI Replace SEO?
GEO does not replace SEO: it depends on it. AI search features and assistants that cite sources build their answers from web pages they retrieve, and what they retrieve still depends largely on what search engines can find, read and trust. What changes is where visibility shows up, how much of it turns into a click, and how you measure it.
This article sets out the real differences between GEO and SEO, what the data says about clicks, and how to split your effort between the two.
What is GEO?
GEO stands for generative engine optimisation: the work of making your brand and content visible in answers produced by AI, such as Google's AI Overviews and AI Mode, ChatGPT, Gemini, Perplexity and Copilot. The term comes from a 2023 research paper by academics from Princeton, Georgia Tech, the Allen Institute for AI and IIT Delhi, which tested how content changes affect visibility in generative answers. In their experiments, adding sources, quotations and statistics improved visibility by up to around 40%.
One point of confusion is worth clearing up. GEO here has nothing to do with geography or local SEO. It is about generative AI.
GEO vs SEO: the differences at a glance
| SEO | GEO | |
|---|---|---|
| Goal | Rank pages in search results and earn clicks | Be mentioned, cited or recommended in AI-generated answers |
| Where you appear | Lists of links, plus features such as snippets and local packs | Inside a written answer, sometimes with a source link |
| What people type | Short keywords and questions | Longer, conversational prompts, often with context |
| Main levers | Technical access, relevant content, links, page experience | All of SEO, plus clear self-contained answers, evidence, and mentions of your brand across other sources |
| Success measured by | Rankings, clicks, conversions | Share of mentions and citations, quality of how you are described, AI referral traffic |
| Maturity | Decades of tools and data | Young, fast-moving, measured by sampling |
What the data says about clicks
The clearest evidence so far comes from Pew Research Center, which analysed the browsing of 900 US adults in March 2025 across almost 69,000 Google searches.
Source: Pew Research Center, July 2025. Browsing data from 900 US adults, March 2025.
The type of query matters. Only 8% of one- or two-word searches produced an AI summary, compared with 53% of searches of ten words or more, and 60% of searches starting with question words such as "who", "what" or "why".
Two conclusions follow. Informational content that answers simple questions is losing clicks, because the answer is given on the results page. And visibility without a click now has value of its own: if your brand is named in the answer, you have reached the person even if they never visit your site.
Is SEO dead?
No, and the reasons are practical rather than hopeful.
- AI answers are built on retrieved pages. Being crawlable, indexed and ranked is still what puts your content in front of the systems that write the answers.
- Commercial searches still produce clicks. Someone comparing providers, prices or products still wants to visit sites, read the detail and act.
- Search is still the main discovery channel for most businesses, and the same technical and content foundations serve both.
What is disappearing is a particular kind of SEO: thin pages written to rank for easy questions, with nothing a summary cannot say in two lines. The future of SEO looks like fewer, better pages that add information a summary cannot replace, a technically sound site that both search and AI crawlers can access, and a brand that is known and mentioned well beyond its own website.
How AI search chooses which sources to use
The details differ by platform and change often, but the broad mechanics are similar. The AI interprets the question, runs one or several searches behind the scenes, retrieves candidate pages, extracts the passages that best answer each part of the question, and writes a response that may cite some of them. Google has described this approach for AI Mode as "query fan-out": a single question is broken into several related searches run at once.
Three consequences matter for your content. A page can be used for one precise passage even if it does not rank first for the main query, so depth on sub-questions pays off. Clear, factual passages are easier to extract than long introductions. And the same trust signals that help in search, such as expertise, accuracy and reputation, influence which sources are selected.
What GEO adds on top of SEO
If SEO is in good shape, GEO is not a separate discipline to build from scratch. It is a set of additional practices.
Research prompts, not just keywords
People ask AI tools full questions with their situation included: "which agency is good for a pet food brand launching in the UK" rather than "pet marketing agency". Map the questions your buyers ask at each stage and check how AI tools currently answer them.
Write answers that stand on their own
AI systems extract passages, not whole pages. Each section should answer its heading directly in the first sentence or two, and make sense if quoted alone.
Bring evidence
Original data, named sources, specific figures and expert input are what make a passage worth citing. This matches both the research on GEO and what makes content useful to a reader. It is also why content marketing and GEO are now the same conversation: a page with nothing original in it has nothing to be cited for.
Earn mentions beyond your site
AI answers draw heavily on third-party sources. Pew found Wikipedia, YouTube and Reddit were the most cited sources in Google's AI summaries. Reviews, industry media, directories and comparison articles all shape how AI describes a brand, which makes digital PR and your presence on social platforms part of GEO. We covered the same shift from the social side in our guide to social media trends for 2027.
Keep brand facts consistent
AI tools assemble a picture of your business from many sources. Your name, what you do, who you serve and where you operate should read the same on your site, your business profiles, social platforms and directories. A website migration is the moment this most often breaks, so plan the update of every profile alongside the move.
Decide which AI crawlers can access your site
Some hosting and CDN providers now block AI crawlers by default. Check your robots.txt and your CDN settings, and make that decision deliberately rather than by accident. It belongs to the same technical SEO routine as your crawl and indexing checks.
Measure differently
Track a fixed set of prompts across the main AI tools each month: are you mentioned, how are you described, who is recommended instead of you? Add AI referral traffic (visits from chatgpt.com, perplexity.ai and similar) in your analytics, and watch branded search, which tends to rise when AI answers name you.
A GEO checklist for an existing website
- Check how the main AI tools describe your brand today, and correct outdated or inaccurate information at the source.
- List the twenty questions buyers most often ask before choosing a provider like you.
- Make sure each of those questions is answered clearly on your site, in a section that opens with the answer.
- Add evidence to your key pages: figures, examples, named experts, dates.
- Keep your business profiles, directories and social bios consistent with your site.
- Review robots.txt and CDN settings for AI crawler access.
- Set up a monthly prompt tracking routine and add AI referrals to your analytics reports.
How to split effort between SEO and GEO
| Your situation | Where to put the effort first |
|---|---|
| New or low-authority site | SEO foundations: technical health, core commercial pages, first links. GEO will not work without them. |
| Established site whose informational traffic is falling | Restructure key content for answer-first passages, add evidence, and invest in brand mentions. |
| B2B with a long, considered purchase | Both, with a focus on the comparison and "best provider for" prompts buyers ask AI tools. |
| Local business | Local SEO and consistent listings first, then monitor how AI tools describe you locally. |
| Regulated sector (health, finance, veterinary) | Accuracy and consistency of claims across every source, since AI answers can repeat outdated or wrong information. |
Common mistakes
- Treating GEO as a replacement budget. Moving money out of SEO to "do GEO" removes the foundation GEO depends on.
- Buying tools before defining prompts. A tracking dashboard is only useful once you know which questions matter to your buyers.
- Chasing a single AI platform. Behaviour differs between tools and changes often. Build for clarity and evidence, which travel well across all of them.
- Ignoring what AI already says about you. Check it before optimising anything. Outdated or wrong descriptions are often the most urgent fix.
In practice, the brands that do well in AI answers are usually the ones that already did SEO properly and added a GEO layer on top. That is how we approach it as a GEO agency: one strategy, two ways of being found, supported by content that is worth citing.
FAQ
What is the difference between GEO and SEO?
SEO aims to rank your pages in search results and earn clicks. GEO aims to get your brand and content mentioned or cited in AI-generated answers. GEO builds on SEO rather than replacing it.
Will AI replace SEO?
Not in the foreseeable future. AI answers rely on pages that search systems find and trust, and commercial searches still send people to websites. SEO is changing, but its foundations are what make GEO possible.
Is SEO dead?
No. Thin content written only to rank is losing value, but technically sound sites with genuinely useful content remain the basis of visibility in both search results and AI answers.
What is the future of SEO?
Fewer, more useful pages, stronger brands with mentions beyond their own sites, technical access for both search and AI crawlers, and measurement that includes AI visibility alongside rankings and clicks.
What is the difference between GEO and AEO?
AEO (answer engine optimisation) is an older term for optimising content to be used as a direct answer, originally in featured snippets and voice assistants. GEO applies the same idea to generative AI answers. In practice the two overlap heavily.
Do I need a separate agency for GEO?
Not necessarily. GEO depends on the same technical, content and authority work as SEO, so it is usually most effective when the same team handles both.
