What is GEO (Generative Engine Optimization)?

Definition

GEO refers to all practices aimed at optimizing a brand's visibility in responses generated by LLMs such as ChatGPT, Claude, or Perplexity. The goal is not only to drive direct traffic, but to be cited as a reliable reference in AI-generated answers.

GEO (Generative Engine Optimization) is an emerging search discipline that extends SEO logic to AI-powered answer engines. Where SEO aims to rank pages in Google's SERPs, GEO seeks to influence the responses generated by LLMs.

Why GEO changes the rules

AI search engines don't return a list of links: they synthesize a response. Being cited in that response shapes brand perception before any click occurs. It's a presence in the messy middle of the buying journey.

The levers of GEO

GEO relies on the credibility of sources mentioning the brand, the consistency and frequency of web mentions, the quality of owned content (structure, data, factual accuracy), and presence in the publications and databases LLMs draw from.

GEO and SEO share fundamentals (content quality, authority, structure) but have different goals. SEO targets measurable organic traffic. GEO targets citation and mental presence in AI responses, influencing decision-making without necessarily generating a direct click.

You need to systematically test LLMs (ChatGPT, Claude, Perplexity, Gemini) with queries representative of your sector and measure the frequency and sentiment of citations. This is what's called an AI visibility audit.

Related articles

SEO Comparison Pages: X vs Y
16 March 2026
-
SEO

Comparison Page SEO: How to Rank for "X vs Y" Queries

"X vs Y" queries capture users at the decision stage. Here's how to structure and optimize your comparison pages to dominate them in SEO.

Gemini, ChatGPT, Perplexity, Claude, Copilot differences?
10 March 2026
-
GEO / AEO

Gemini vs ChatGPT vs Perplexity vs Claude vs Copilot: What Are the Differences for Your Visibility in 2026?

Not all AIs cite content the same way. Here's what that changes for your visibility in 2026.

RAG (Retrieval-Augmented Generation)
09 March 2026
-
GEO / AEO

What Is RAG (Retrieval-Augmented Generation)? And Why It Impacts Your Visibility

RAG is why ChatGPT cites some websites and not others. Here's how this mechanism works, and what it means for you.

Related terms

SEO

SEO (Search Engine Optimization)

SEO refers to all techniques aimed at improving a website's ranking in the organic results of search engines. It rests on three pillars: technical optimization, content quality, and domain authority.

GEO / AEO

LLM (Large Language Model)

An LLM (Large Language Model) is an artificial intelligence model trained on large amounts of text to generate, understand, and synthesize natural language. ChatGPT, Claude, Gemini, and Mistral are LLMs. They form the foundation of AI answer engines.

GEO / AEO

AI share of voice

AI share of voice measures the proportion of LLM-generated responses in which a brand is cited, relative to the total citations within its sector. It is the central GEO monitoring metric and the AI equivalent of classic SEO share of voice.