Google says a page needs only to be indexed and eligible to appear with a snippet to be shown as a supporting link in AI Overviews and AI Mode, and there are no additional technical requirements. The bottom line: eligibility is the same as for Search, selection is not tied to rank, the share of cited pages that rank in the top 10 has fallen sharply, and the evidence on what wins the citation points to topic coverage, corroboration, and clear passages, so the practical move is to cover a subject and its sub questions well and confirm you are eligible.
New to the term? What is answer engine optimization covers the basics.
What Google states
Google's "AI features and your website" documentation says a page must be indexed and eligible to be shown in Google Search with a snippet, and that there are no additional technical requirements. It says you do not need machine readable files, AI text files, or special markup, and that SEO fundamentals remain worthwhile: crawling allowed in robots.txt and by any CDN or hosting layer, internal links, important content in text, page experience, structured data that matches visible text, and current Merchant Center and Business Profile information. It also says AI Overviews and AI Mode may use different models and techniques, so the links they show vary, and that AI Overviews are shown only when they are additive and often do not trigger.
What the data says about selection
| Finding | Source |
|---|---|
| 76.1% of cited pages ranked in the top 10 in July 2025. 37.9% did in March 2026, with 31.2% at positions 11 to 100 and 31.0% outside the top 100 | Ahrefs, 863,000 keywords and 4 million URLs |
| About 17% top 10 overlap in February 2026 | BrightEdge, using its own method |
| AI Mode and AI Overviews cited different sources 87% of the time for the same query | Ahrefs, via Search Engine Journal |
| An AI Overview has about a 70% chance of changing between observations | Ahrefs |
Ahrefs notes part of the drop reflects better citation detection, and Google made Gemini 3 the default model behind AI Overviews on January 27, 2026, so the two datasets are not directly comparable. The direction is clear: ranking does not decide the citation.
Why fan out matters
Google's AI features expand a question into related searches, a technique often called query fan out. A page that ranks for the sub questions can be retrieved even if it does not rank for the head query. That makes topic depth, a full answer to a subject and its follow ups, more valuable than a single page aimed at one keyword.
Steps
- Confirm eligibility. Indexed, not noindex, and no nosnippet or max snippet of zero. Those controls make a page ineligible for AI Overviews.
- Check crawl access. robots.txt and any CDN or firewall must allow Googlebot.
- Cover the subject. Write pages for the sub questions around each topic, not just the head term.
- Write clear passages. Answer first, with numbers, sources, and dates.
- Keep business data current. Business Profile and Merchant Center where they apply.
- Use structured data accurately. It must match the visible text. It is not required.
- Monitor. Use Search Console's generative AI report and repeated manual checks.
Questions people ask
How do Google AI Overviews choose which pages to link?
A page must be indexed and eligible for a snippet, with no additional technical requirements. Beyond that, Google has not published a ranking method, and studies show citations increasingly come from pages outside the top 10.
Do I need special schema for AI Overviews?
No. Google says there is no special schema.org structured data to add, and no AI text files or machine readable files are needed.
How do I opt out of AI Overviews?
Use nosnippet, data-nosnippet, max-snippet, or noindex. These controls apply to AI Overviews and AI Mode, and they also affect how your page appears in normal results.
Do pages need to rank in the top 10 to be cited?
No. Ahrefs found 37.9 percent of cited pages ranked in the top 10 in March 2026, down from 76.1 percent in July 2025.