In 2026, Google shows AI-generated answers, AI Overviews, on many informational queries. ChatGPT, Perplexity, Claude and Gemini also cite web sources in their answers. Getting cited by these systems is becoming a visibility issue. That is what GEO (Generative Engine Optimization) is about.
What is GEO (Generative Engine Optimization)?
GEO covers the practices that increase the chances that content will be used and cited by generative search engines. Classic SEO aims for a spot in a list of results. GEO aims to be among the sources an AI cites in its answer.
The main generative engines in 2026:
- Google AI Overviews: generated answers at the top of some results pages
- Google's AI Mode: a conversational search experience, rolled out gradually by country and language
- ChatGPT (with web search): has cited web sources in its answers since late 2024
- Perplexity: a conversational search engine that displays its sources
- Claude: an AI assistant that can search the web
- Gemini: Google's AI assistant
How do Google's AI Overviews work?
Google doesn't publish the details of how sources are selected. Its documentation on AI features in Search does, however, give clear guidance: no special optimization is required, SEO best practices apply, and a page must be indexed and eligible to be shown with a snippet to serve as a supporting link. Here is what we know, factor by factor:
| Factor | What we know | How to work on it |
|---|---|---|
| Indexing and snippet | An eligibility condition stated by Google | Check indexing in Search Console; don't block snippets (nosnippet) without a reason |
| Organic ranking | Cited pages often already rank well: this is an industry observation, not a published rule | Classic SEO: content, technical, authority |
| Clarity of the answer | A direct answer is easier to reuse | Open each section with a short, precise answer |
| Verifiable facts | Google asks for reliable, helpful content | Cite your sources, date your data |
| E-E-A-T | A concept from Google's guidelines for its search quality raters | Named author, real experience, cited sources |
| Freshness | Matters mostly for fast-moving topics | Update key pages and show the date |
| Structured data | None is required for AI Overviews; it must match the visible content | Article, Organization or Product, depending on the page |
7 GEO practices to get cited by AI
1. The summary at the top of each section
Open each section with a direct answer, in a few sentences, that makes sense on its own. Then go into detail. Nothing guarantees that a passage will be used, but a clear answer is easier to cite, for an AI as for a reader in a hurry.
2. Verifiable, sourced facts
Content that says "SEO is important" adds nothing. Content that gives a precise data point, dated and with its source, is more useful to the reader and easier to cite. Never make up a figure to look precise: an unsourced data point weakens the whole page.
3. Tables and lists
Well-built HTML tables and lists make comparative information easy to read and to extract. Use them to compare methods, options or steps.
4. Suitable structured data
Structured data helps engines understand a page: Article for editorial content, Organization for the company, Product for a product page. Google states that no particular markup is needed for AI Overviews. Also note that in 2023 Google restricted FAQ rich results to well-known government and health websites, and retired HowTo rich results.
5. Demonstrated expertise (E-E-A-T)
Show who is writing and why they are qualified: a named author with a short bio, cited sources, first-hand experience. These signals reassure readers and match what Google describes as reliable content.
6. Complete coverage of the topic
Address the questions readers actually ask, including related questions. Length is not a goal: a long, empty text helps no one.
7. Freshness and updates
Update your key content when the topic changes: new data, new examples, a visible update date ("Updated October 2026"). Changing the date without really changing the content adds nothing.
GEO and classic SEO: complementary, not competing
GEO doesn't replace classic SEO: it builds on it. Google says so itself: SEO best practices remain the foundation for its AI features. In practice, the pages that get cited often already rank well.
The approach we recommend in 2026:
- Work on classic SEO first (indexing, content, technical, authority)
- Add GEO signals (clear answers, sourced facts, structure)
- Track your citations in AI answers, on chosen questions
- Adjust based on what you observe
How Zerkado helps you work on GEO
Zerkado doesn't calculate a GEO score: no tool can reliably predict that content will be cited in an AI Overview. Each module does, however, help with a specific point:
- The Content Copilot compares your page with the top-ranking pages on Google, flags missing terms and sections, and suggests rewrites that you review
- The technical audit checks indexing, tags and structured data, page by page
- The AI Visibility module checks, for the questions you choose, whether conversational engines cite your site
- Rank tracking measures your position in classic results, the foundation of GEO
- The connected Search Console shows each page's impressions and clicks
- The editorial points remain in your hands: cited sources, named author, updates
This way you track your visibility in classic results and, with the AI Visibility module, in generated answers. The plans that include this module are listed on the pricing page.
GEO is a recent topic, and its practices are still taking shape. Start with the basics, measure, then adjust. Try Zerkado free for 14 days, with no credit card, to work on content for your own sites.