What are AI Overviews? The box that eats your clicks
Type a question into Google today and the first thing you see is likely not ten blue links - it is a ready-made AI paragraph answering the question outright. That is AI Overviews, and it is rewriting the rules for every website.
AI Overviews is the AI-generated answer box (powered by Gemini) at the top of Google results, launched officially in May 2024 and now covering 200+ countries including Vietnamese. Per Pew Research Center, when the box appears, clicks on traditional results drop from 15% to 8% - nearly half. There is no way to "register" for inclusion; Google picks sources from pages that answer directly with data, named sources, schema and credible authorship - exactly the GEO technique set.
What exactly are AI Overviews?
AI Overviews is the AI-generated answer that sits above Google's search results, summarizing information from multiple sources into one finished passage, with cited links alongside. It runs on the Gemini model, evolved from the 2023 Search Generative Experience (SGE) test, launched officially in the US in May 2024, and has since expanded to more than 200 countries - including Vietnam, with Vietnamese-language support.
The fundamental difference from the old featured snippet: a snippet quotes one page verbatim, while AI Overviews synthesizes and rewrites from many pages. A user can finish reading the answer without clicking anything at all.
How hard does it hit your website?
The most credible data so far is Pew Research Center's July 2025 study, which tracked the real browsing behavior of nearly 900 US users during March 2025. The findings: 18% of Google searches triggered an AI Overview; when one appeared, users clicked a traditional result in only 8% of searches versus 15% without one - nearly half the clicks gone; clicks on links cited inside the box were rarer still, about 1% of visits; and users more often ended their search entirely after seeing an Overview (26% vs 16%). Google disputes the study's methodology, but the downward click trend shows up across multiple industry reports - Ahrefs measured top-1 CTR dropping as much as 58% on queries with Overviews. The most brutal real-world example remains Chegg, which lost 49% of non-paid traffic in a single month.
What should a website owner actually do?
There is no sign-up form - Google picks its own sources. What the picked sources have in common is precisely the GEO playbook: answer the question directly in the opening passage, carry verifiable numbers with named sources, use clean schema markup and visible authorship, and keep the page fully indexed. The craft details live in our guides to writing quotable FAQs and optimizing specifically for AI Overviews; check any page against all 27 criteria with the free SEO + GEO Audit tool. The goal shifts from winning the click to being the named, cited source - because in a zero-click world, the mention is the traffic.
Figures from Pew Research Center (July 2025) and industry reports cited in the text; Google disputes aspects of the Pew methodology. Feature behavior and coverage change frequently - re-check before making budget decisions.
Frequently asked questions
What are Google AI Overviews?
AI Overviews is the AI-generated answer box at the top of Google's results page, powered by the Gemini model. It summarizes information from multiple sources into one complete passage with citation links alongside. It grew out of the 2023 Search Generative Experience test, launched officially in the US in May 2024, and now covers 200+ countries including Vietnamese-language support.
How do AI Overviews affect website traffic?
Significantly. Pew Research Center's July 2025 study of real browsing behavior found that when an AI Overview appears, users click a traditional result in only 8% of searches versus 15% without one - nearly half the clicks gone. Clicks on the links cited inside the box are rarer still, about 1% of visits, and users more often end their search entirely after seeing one (26% vs 16%).
Can I register to appear in AI Overviews?
No - there is no submission form. Google selects sources automatically from pages that answer questions directly, carry data and named sources, use clean schema, and show credible authorship - which is exactly the GEO technique set. The practical path is making every page quotable and machine-readable, then measuring whether you get picked up.