Comparison
GEO vs SEO (and AEO): what's actually different
New acronyms arrive faster than new tactics. Here's what generative engine optimization changes compared with classic SEO, and what it doesn't.
Short answer: SEO gets your pages ranked and clicked in search results. GEO (generative engine optimization) gets your business named, quoted and cited inside AI-written answers. AEO (answer engine optimization) is an older name for nearly the same goal. The foundations overlap heavily. The differences are in what counts as a win, how much third-party mentions matter, and how you measure progress.
The three terms, defined
SEO: search engine optimization
The work of making a website easy for search engines to crawl, understand and rank, so that people searching find it and click through. Success is a position on a results page and the visits that follow.
AEO: answer engine optimization
The term grew up around featured snippets and voice assistants, where the engine reads out one answer instead of showing ten links. Today people use it for AI assistants too. Success is being the answer, or part of it.
GEO: generative engine optimization
The term was popularized by a 2023 academic paper, "GEO: Generative Engine Optimization", by researchers at Princeton and collaborating institutions. It looked at how content could be made more visible in answers written by large language models. In practice, GEO means improving how often and how accurately AI assistants such as ChatGPT, Perplexity, Gemini, Claude and Copilot, plus Google's AI Overviews, mention and cite you.
"AI SEO", "LLM SEO" and "AI visibility" describe the same territory. The labels change faster than the work does.
Side by side
| SEO | GEO / AEO | |
|---|---|---|
| Where you show up | Ranked links on a results page | Inside a written answer, as a name, a quote or a cited source |
| What a win looks like | A top position, then a click | Being named, described correctly and linked, often with no click |
| What the engine is choosing | Which pages to list, in what order | Which facts and sources to blend into one answer |
| Role of other sites | Mostly links pointing to you | Also what other pages say about you, since answers synthesize several sources |
| Stability | Rankings move, but one search gives one ordered list | The same question can produce different answers from run to run |
| Measurement tools | Google Search Console, Bing Webmaster Tools, analytics | No official console for most assistants, so you sample answers yourself or with a tool |
What stays the same
More than most GEO marketing admits. Google states that there are no additional requirements to appear in AI Overviews or AI Mode. Pages need to be indexed and eligible to show with a snippet, and the usual SEO fundamentals apply. Most AI assistants with live search work the same way at the start: they search, fetch pages and read them. So the basics carry straight over:
- Crawlable, indexable pages with real text in the HTML
- Clear titles, headings and internal links
- Content that answers the question better than the alternatives
- A reputation that other credible sites confirm
If a site has weak SEO foundations, GEO work sits on sand. That's why we treat them as one program, not two.
What is genuinely different
1. Mentions matter, not just links
An AI answer to "best payroll software for restaurants" might blend a review site, a Reddit thread and two comparison articles. If those sources name you, you're likely to be named, even if your own page isn't the one cited. Getting accurately described on the sites engines read becomes a core task, not a side project.
2. Entity clarity carries more weight
A results page can list an ambiguous site and let the searcher decide. An AI answer has to decide for them. If your name is generic or your site describes you vaguely, the model may confuse you with someone else. We saw this ourselves: Gemini described our own brand name as a different business. Consistent names, plain descriptions and Organization structured data with sameAs links reduce that risk.
3. Questions are longer and more specific
People type keywords into search boxes and ask assistants full questions with context, such as "for a two-person team", "under $50 a month" or "near Towson". Google has also described AI Mode as running several related searches behind the scenes for one question, sometimes called "query fan-out". Pages that clearly state who they're for, with specifics, match more of these questions.
4. Answer-first writing gets quoted
Engines lift self-contained passages. A heading that matches the question, followed by a direct two- or three-sentence answer, is easy to quote accurately. The detail can follow.
5. The goal includes accuracy
In SEO, a ranking page is a win. In GEO, being mentioned with the wrong price, an old product or a competitor's feature is a problem to fix. Keeping your facts consistent across your site and listings is part of the job.
Measuring each one
SEO has mature, first-party data. Google Search Console and Bing Webmaster Tools report impressions, clicks, positions and indexing status for your own site.
GEO mostly doesn't. The practical method is to keep a fixed list of real customer questions, ask each engine regularly, and record:
- Mention rate: the share of answers that name you
- Citation rate: the share of answers that link to your site
- Share of voice: your mentions compared with the competitors you track
- Accuracy: whether what's said about you is true and current
Because answers vary, look at trends over several weeks rather than single results. We explain the full routine in how to check whether AI mentions your brand.
Which should you invest in?
For most businesses the honest answer is both, in this order:
- Foundations first. Crawl access (including AI crawlers), indexing, page speed, clear titles and a clear statement of what you do.
- Question-matched content. Pages that answer the specific questions your buyers ask, written answer-first.
- Off-site consistency. Profiles, listings, reviews and roundup inclusions that describe you the same way your site does.
- Measurement. Search Console for SEO, and regular answer sampling for AI.
This sequence improves classic rankings and AI answers at the same time, which is the point. For definitions of the terms used here, see the AI visibility glossary.
Questions
Is GEO replacing SEO?
No. AI answers that use live search depend on the same crawling and indexing that SEO takes care of. What's changing is that more searches end in a written answer, so being part of that answer matters alongside ranking.
Is AEO the same as GEO?
Close enough that most people use them interchangeably. AEO is older and grew out of featured snippets and voice search. GEO came later and focuses on answers generated by large language models.
Do I need special markup or files for GEO?
Google says no special schema or AI text files are needed for its AI features. Structured data that matches your visible content is still useful for making your identity clear. Files like llms.txt are optional and unproven.
Can GEO results be guaranteed?
No. Answers are generated, they vary between runs and they depend on sources you don't control. Anyone guaranteeing a placement in ChatGPT or AI Overviews is overpromising.
Want this done for you?
We make daily, human-reviewed improvements so AI assistants and search engines can find you, trust what they read, and recommend you by name. A report lands every Monday.