GEO vs SEO vs AEO: What Is the Difference and Which Do You Need?

The way people find information has changed more in the past two years than in the previous decade. Google still processes roughly 8.5 billion searches per day, but a growing share now end without a click — because an AI model answered the question directly. Perplexity AI crossed 100 million monthly users in early 2025. ChatGPT’s search feature is used by more than 100 million people weekly. Google AI Overviews appear on more than 47 percent of all US searches.

Three disciplines have emerged to address this shift: SEO, AEO, and GEO. They are related but not the same, and applying the wrong one to a problem costs real time and money.

What SEO actually is (and what it no longer covers)

Search Engine Optimisation is the practice of making content discoverable and rankable in traditional search engine results pages. BrightEdge’s 2024 Channel Performance Report found organic search still drives 53 percent of all website traffic across industries. SEO covers: technical site health, keyword targeting, on-page content quality, backlink authority, and user experience signals.

What SEO no longer covers alone: when someone searches “best accounting software for freelancers” in 2025, they are likely to see a Google AI Overview at the top that synthesises five websites and gives a direct recommendation — before any traditional blue links appear. If your site is not part of that synthesis, you receive no traffic from that query even if you rank position three.

SEO gets you into the index. AEO and GEO determine what happens after that.

What AEO is

Answer Engine Optimisation structures your content so that AI and voice search systems extract it as a direct answer to a specific question. The core technique: write a complete, direct answer in the first paragraph of the relevant section, then support it with evidence. Dr. Pete Meyers at Moz has tracked featured snippet volatility since 2015 — his data shows pages leading with a direct answer have a 4.5 times higher chance of being pulled into a featured snippet than pages that bury the answer.

AEO applies to: Google featured snippets, People Also Ask boxes, voice assistants, and AI chatbots that pull from live web data. Rand Fishkin’s 2024 SparkToro study found zero-click searches now account for approximately 60 percent of Google searches in the US. Every zero-click search returning a featured snippet is an AEO opportunity.

For the full AEO framework see What Is Answer Engine Optimisation and the AEO Checklist for Small Business Websites.

What GEO is

Generative Engine Optimisation makes your brand prominent enough in authority signals that AI language models cite you when generating answers. The term was formalised in a September 2023 paper from researchers at Princeton, Georgia Tech, and the Allen Institute for AI. The paper tested nine optimisation strategies across 10,000 queries and found that adding statistics, citing authoritative sources, and using fluent quotable language increased AI citation rates by up to 40 percent.

GEO differs from AEO in one critical way: AEO targets extraction (your content being pulled as an answer), while GEO targets citation (your brand being named as a source within an AI-generated response). A 2024 Seer Interactive study found that pages cited in Perplexity converted at 2.3 times the rate of standard organic traffic.

For the full GEO framework see What Is Generative Engine Optimisation and How to Build Topical Authority for Generative AI Search.

How the three disciplines relate

SEO is the foundation. AEO sits on top, dealing with content structure and schema for extraction. GEO operates at the brand and authority level, requiring everything SEO and AEO provide, then adding entity optimisation and topical authority that makes AI models confident enough to cite you by name.

A practical analogy: SEO gets you on the library shelves. AEO gets you in the catalogue so a librarian can find you instantly. GEO gets you recommended by the librarian by name when someone asks for the best source on a topic.

Which does your business actually need?

If your primary goal is organic traffic volume: SEO is your primary lever.

If your audience uses voice search heavily or your category shows featured snippets on most queries: AEO deserves significant investment. Healthcare, legal, financial advice, home services, and local businesses see disproportionate AEO returns.

If you are in B2B, professional services, or SaaS: GEO is increasingly urgent. Your buyers are asking ChatGPT and Perplexity for vendor recommendations before visiting your website.

A practical starting point: audit your current SEO health first. Implement AEO-friendly content structure across your most important pages. Then build the entity and topical authority signals GEO requires.

Work with KlyverAI

KlyverAI is a specialist GEO, AEO, and SEO agency serving clients globally. If this post raised questions about your own AI search visibility, the fastest next step is a free audit. We check your current GEO and AEO signals, identify the specific gaps holding you back, and give you a prioritised action list — at no cost and with no obligation.

Get your free GEO and AEO audit at klyverai.com →

Internal links in this cluster

AEO posts: What Is AEO | Optimise Content for AI Answers | Does AEO Replace SEO | Get Cited in ChatGPT and Perplexity | Schema Markup for AEO | AEO Checklist | Why Not in AI Search | AEO Timeline | Voice Search vs AEO | Measure AEO

GEO posts: What Is GEO | Get Cited by ChatGPT and AI Overviews | Structure Content for AI Citation | AI Share of Voice | Perplexity Optimisation | Topical Authority | GEO for B2B | Entity Optimisation | GEO Agency Guide

FAQ

What is the difference between SEO, AEO, and GEO?

SEO optimises content to rank in traditional search result pages. AEO structures content to appear in AI-generated answer boxes and voice search results. GEO optimises for citation within AI-generated responses from ChatGPT, Perplexity, and Google AI Overviews. Each discipline targets a different stage of how modern search systems surface information.

Do I need all three: SEO, AEO, and GEO?

Most businesses benefit from all three working together. SEO builds the technical and authority foundation. AEO captures featured snippets and voice queries. GEO ensures your brand is cited in AI-generated answers. The proportion of effort depends on your audience, industry, and where your buyers are searching.

Is GEO replacing SEO?

No. GEO supplements SEO rather than replacing it. AI tools like ChatGPT and Perplexity use indexed web content as source material. A strong SEO foundation increases the probability that AI models cite your content. Businesses that abandon SEO to focus only on GEO risk losing the authority signals that make GEO work.

How long does it take to see results from GEO or AEO?

AEO results for featured snippets can appear within two to six weeks for low-competition queries on established sites. GEO results typically take two to four months. Traditional SEO remains the longest runway, often three to six months for new content.

Which should I prioritise: SEO, AEO, or GEO?

If organic traffic volume is your primary goal, SEO is the primary lever. If your audience uses voice search heavily or your category shows frequent featured snippets, AEO deserves significant investment. If you are in B2B, professional services, or SaaS where buyers research via AI tools before contacting vendors, GEO is increasingly urgent.

Written by the KlyverAI Editorial Team. KlyverAI is a global specialist agency in Generative Engine Optimisation (GEO), Answer Engine Optimisation (AEO), and SEO. We help brands appear in AI-generated answers across ChatGPT, Perplexity, Google AI Overviews, and traditional search. All posts are reviewed for accuracy and updated when the landscape changes. Learn more about KlyverAI →