What is GEO (Generative Engine Optimization)?
GEO (Generative Engine Optimization) is the practice of making a brand visible, cited and recommended inside answers that large language models generate—in ChatGPT, Perplexity, Gemini, Claude and Google’s AI features.
Where does the term GEO come from?
The term was introduced in the research paper “GEO: Generative Engine Optimization” by Aggarwal et al., published at KDD 2024. The authors built a benchmark of 10,000 queries and showed that targeted content changes—such as adding citations, quotations and statistics—can increase a source’s visibility in generative engine responses by up to 40%, with effects that vary by domain.
Which signals decide whether a model recommends a brand?
| Signal | What it means | What to do |
|---|---|---|
| Crawl access | The engine can fetch and read your pages | Allow search crawlers such as OAI-SearchBot, PerplexityBot, Claude-SearchBot and Googlebot |
| Entity clarity | The model knows exactly who you are and what you do | One consistent name, category and description across site, profiles and structured data |
| Extractable evidence | Passages contain facts a model can reuse | Statistics, quotations, definitions and sources in plain HTML |
| Third-party consensus | Independent sources describe you the same way | Earn mentions in press, reviews, directories and communities |
| Freshness | Information is current | Visible update dates and regular revisions |
How do you do GEO in practice?
- Define the entity: one sentence that says who you are, for whom, and what you do—used identically everywhere.
- Open crawl access for search and answer bots in robots.txt and at your CDN.
- Publish pages that answer the questions buyers ask, with evidence engines can quote.
- Earn third-party mentions on the sources engines already trust in your category.
- Track prompts across engines and compare how often you are mentioned versus competitors.
- Correct wrong descriptions of your brand wherever they appear—models repeat them.
How is GEO different from AEO?
AEO optimizes a passage so it can be quoted. GEO optimizes an entity so it is recommended. A company needs both: AEO makes its pages usable as sources, GEO makes the model confident enough to name the company in the answer.
Frequently asked questions
Can GEO guarantee that ChatGPT recommends my company?
No. Engines decide what they cite. GEO raises the probability by making your company crawlable, clearly defined, well evidenced and consistently described across independent sources.
Does GEO replace SEO?
No. Generative engines retrieve from web indexes, so pages still need to be indexable and useful. GEO adds entity clarity and third-party consensus on top of SEO.
Which engines matter most for GEO?
Those your buyers use: typically ChatGPT, Google’s AI Overviews and AI Mode, Perplexity, Gemini and Claude. They cite different sources, so each should be tracked separately.