What Is Google AI Overview and Is It Live in Thailand

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Key Summary:

An AI Overview is the AI-generated summary Google places at the top of the results page, with links to the source websites it drew on. It now runs on Gemini 3 and is officially available in Thailand. This guide covers how Google AI Overview works, how it differs from AI Mode and featured snippets, what it means for SEO, and how to get your website cited, which is the first step in any AI Search plan for your brand.

An AI Overview is a Google Search feature that uses AI to write a summary answer from multiple websites in Google’s index, then shows it at the top of the results page. Gemini is the model behind it, every summary links to its sources, and it is officially available to users in Thailand.

Not long ago, typing a question into Google returned ten blue links, and you clicked through one site after another to piece the answer together. Anyone doing SEO fought for positions 1 to 3, because that’s where the clicks were.

Today the same question comes back with a summary paragraph written by Google itself, sitting above every link. Plenty of people stop reading right there. Marketing teams in Thailand now meet this box in their own everyday searches, which brings the basic questions back: what is an AI Overview, where does Google get the answer, and how does your website end up inside it. We’ll take them one at a time.

What is an AI Overview

Google’s official name is AI Overviews, plural, though most people search for the singular. It refers to an answer that generative AI builds from Google’s search index, with links to the websites used as sources. Readers get the big picture first, then click through to the source that interests them. The timeline below explains why so many older articles on the topic are now out of date.

• May 2024 The AI Overview Google had been testing in Search Labs as Search Generative Experience (SGE) launched in the United States at Google I/O.
• October 2024 Expansion to more than 100 countries and territories, with languages beyond English added.
• May 2025 At I/O, Google reported AI Overviews had more than 1.5 billion users across 200 countries and territories.
• January 2026 Gemini 3 became the default model for AI Overviews worldwide, and users could ask a follow-up straight from the summary into AI Mode.

One question comes up with marketing leaders in Thailand more than any other: does the feature cover this market yet. As of 30 September 2026, it does. Google’s help page lists both the country and its language as supported. Articles that still say otherwise were mostly written in early 2025, when that was accurate.

How Google AI Overview works

Google explains in Search Central that both AI Overviews and AI Mode use a technique called query fan-out. One question is split into several related searches that run at the same time, and Gemini synthesises the results into a single answer. In sequence, that’s five steps.

1. Query understanding

What happens:

• The system works out what the user wants from the words typed. A search such as “what is AI Overview” is read as a request for a definition and a general picture.
• It decides whether the query should show a summary at all. Google says one appears only when its systems judge generative AI to be especially helpful.

2. Query fan-out

What happens:

• One question is split into multiple sub-queries covering subtopics and related angles.
• Each sub-query runs in parallel, so the system sees a wider set of sources than a single search would. We explain the mechanism in detail in our guide to query fan-out.

3. Retrieval from Google’s index

What happens:

• The system pulls pages that answer each sub-query from the same index used to rank classic results.
• Pages that aren’t indexed, or are set to block snippets, drop out at this stage.

4. Synthesis with Gemini

What happens:

• A version of Gemini tuned for Search reads what was retrieved and writes a new summary in the user’s language.
• Since January 2026 the default model has been Gemini 3, according to Google.

5. The answer with citation links

What happens:

• The answer appears at the top of the results page with links to the source websites, shown in a range of ways.
• In Search Console, every link inside one box counts as the same position. More on that in the measurement section.

Here is where it departs from classic ranking: a website cited in an AI Overview doesn’t have to rank first for the main query. Answer one sub-query better than anyone else and the page can be picked up.

Does AI Overview show for searches in Thailand

Yes, and more often than most people assume. In September 2026 the Primal team checked Ahrefs SERP data for Thailand across six local-language queries: the local equivalents of “what is SEO”, “what is generative AI”, “what is digital marketing”, “what is Google Ads”, “what is an agency” and “SEO services”. Five of the six showed an AI Overview in the top position. Three examples show what that looks like, and why some queries still don’t trigger one.

Example 1, “what is generative AI” shows an AI Overview

What appears on the results page: The summary sits in position 1 and explains generative AI in the local language, citing articles from two universities, followed by People Also Ask and the classic results (Ahrefs TH data, 18 September 2026).

What marketers should know:

• Local-language definitional queries are where AI Overview appears most often, because the system judges a summary to be helpful there.
• The cited sources are pages that answer the point in their first paragraph, even when they don’t hold the top ranking.

Example 2, “what is SEO” shows an AI Overview

What appears on the results page: The summary holds position 1 here too, above the article that ranks first among the classic results (Ahrefs TH data, 17 September 2026).

What marketers should know:

• Queries that marketing brands treat as cornerstone content already have a summary placed above them, so the old first position is now second on the page.
• Websites ranking for these queries should open Google Search Console and compare CTR before and after the summary appeared.

Example 3, “what is an agency” does not show an AI Overview yet

What appears on the results page: Position 1 is a classic featured snippet drawn from a YouTube video, followed by People Also Ask. There’s no AI summary (Ahrefs TH data, 25 August 2026).

What marketers should know:

• Support for a market doesn’t mean every query shows an AI Overview. The system decides query by query, and the same search can show one on one day and drop it the next.
• Queries that still carry a featured snippet are the ones where a clear, direct answer is worth protecting. When a summary replaces the snippet, the most direct source tends to be used first.

AI Overview vs AI Mode vs featured snippet

All three sit on Google and all three give answers, yet the mechanics and the route in are very different. The table sets out the dimensions that matter for planning.

A featured snippet is an answer Google “copies” from one page. Whoever answers most directly takes the whole box.

An AI Overview is an answer Google “rewrites” from several pages. Every page used shares the citation links.

As for AI Mode, Google added more than 35 languages in October 2025, and the AI Mode help page lists Thailand as supported. At I/O in May 2026, Google said AI Mode had passed 1 billion monthly users and that AI Overviews and AI Mode were being brought together into one AI Search experience. Content chosen as a source today is therefore the same content AI Mode will draw on, so there’s no need for two separate plans.

Analysis of how AI Overview affects SEO and brands

Two 2025 studies supply the figures quoted most often. Ahrefs analysed 300,000 keywords and found that queries with an AI Overview had a 34.5% lower average CTR for the top-ranking page than comparable informational queries without one. Pew Research Center tracked 900 US adults in March 2025 and found that when an AI summary appeared, users clicked a classic result in just 8% of searches, against 15% without one, and clicked a link inside the summary in only 1%.

Clicks from informational queries have fallen, and by enough to plan around. Two other facts belong next to that number. First, the queries that trigger summaries most are definitions and how-tos, which sit at the top of the funnel, a long way from the point of purchase. Second, Google states on the Search Central blog that clicks from results pages with AI Overviews are higher quality, with visitors spending more time on the site, because they arrive with context already in hand.

What many brands see as a result is what we call the Alligator Mouth Effect: impressions rise while clicks fall, and the two lines open apart like a pair of jaws. Measure SEO on clicks alone and the chart says the work is slipping, even though the brand may be cited more often and earning visitors with clearer intent. The metrics worth adding are the number of queries where the brand is cited in an AI Overview, visits from AI, and conversions from that channel (we collect the wider numbers in our AI marketing statistics roundup). That measurement model sits at the centre of the AI Search services we develop for brands in Thailand.

Why some people don’t see AI Overview and how to get it

People often ask how to get the AI Overview, and the short answer is that there’s no switch. Google describes AI Overviews as a core Search feature, like knowledge panels, which appears automatically when its systems judge it useful. If you search and don’t see one, the cause is usually one of these.

• The query doesn’t qualify. In our observation, brand-name searches and very short queries rarely show one, and after the erroneous answers of 2024 Google tightened triggering on sensitive topics such as health.
• Account language and region. Availability depends on country and language. With Google Search set to an unsupported language, the box won’t appear.
• The “Web” filter. With this filter selected, results show text links only.
• Staged rollouts. Google releases new features in waves. Some AI Mode features, such as Gemini 3 Pro, need a signed-in personal Google Account and a user aged 18 or over, according to the help page.

How to check AI Overview for yourself

1. Set your Google Search language to a supported one and your region to Thailand.
2. Search a definitional or how-to question, such as “what is generative AI” or “how to do SEO”.
3. Make sure the “Web” filter isn’t still selected, and try a private window to rule out search history.

How to get your website cited in AI Overview

Google says plainly in its Search Central documentation that there are no additional requirements to appear in AI Overviews or AI Mode, and no special optimisation is needed. A page has to be indexed and eligible to show with a snippet under the standard requirements. What changes is the contest, which moves from “who ranks first” to “who answers the sub-query most clearly”. The first three levers below come from Google’s own guidance in John Mueller’s May 2025 post. The last two come from how we structure content for our partners.

• Unique content that serves real readers. Google’s phrase is “unique, non-commodity content”. Pages that repeat what everyone else has written stand the least chance.
• Pages Google can reach. Googlebot must not be blocked, the page must return HTTP 200, and no nosnippet or max-snippet setting should restrict the text so tightly that nothing can be quoted.
• Structured data that matches what’s visible. Schema markup has to describe what the page shows. Google requires everything in the markup to appear on the page and to validate.
• A direct answer up front. Put the definition or main answer in the first paragraph under the heading, then expand.
• Question-shaped headings. H2s and H3s that match sub-queries let one page answer several of the searches the system fans out.

We set out the step-by-step method, the five signals that get a blog cited and what to skip, in our guide on how to optimise a blog for AI Overviews.

How to check whether your website is cited in AI Overview

Many teams measure this wrongly because Search Console has no separate report for the summary. Google says clicks and impressions from AI Overviews and AI Mode are counted under the “Web” search type alongside classic results, and the Search Console documentation explains that an AI Overview occupies a single position, with every link inside it assigned that same position.

Three checks work in practice today.

1. Read the signals in Search Console. A query whose average position jumps close to 1 while impressions rise and CTR drops sharply often means your page is being used in a summary.
2. Check by hand. Search the query in a private window with the region set to Thailand, then look through the sources on the AI Overview for your domain. Repeat over several days, because the cited sources change.
3. Use a rank tracker with an AI Overview filter. Tools such as Ahrefs record which queries show a summary and which domains are cited, so you can track it month by month.

Rank and be chosen by AI Overview with ElevateSEO™

AI Overview still runs on the foundations of SEO. What has moved is the definition of winning, from a position on the page to being chosen as a source. Primal treats this work as building a brand’s search asset across classic Google and AI answers together, through the ElevateSEO™ framework and its six pillars, each of which connects to how the summary is built.

• ElevateTOPICS™ builds topical authority and structures content around the sub-queries that query fan-out produces, with internal links that show the system the whole topic.
• ElevateTECH™ makes every page reachable for Googlebot and AI systems, across HTML structure, URLs and schema that matches the content.
• ElevateTRUST™ builds domain credibility through backlinks and brand information that’s consistent everywhere, signals that systems use when choosing sources.
• ElevateCOMMUNITY™ uses social, UGC and digital PR so the brand is talked about in the places AI draws from.
• ElevateCONTENT™ produces content that reads well for people and LLMs alike, with a direct answer up front, question-based headings and complete structural signals.
• ElevateCONVERSION™ turns the higher-quality clicks that arrive from AI Overview into customers through AI-SCXO.

If your brand is seeing fewer clicks from informational queries, or you don’t yet know whether you’re cited in AI Overview, this is the moment to plan, before competitors take the source positions in your category. Start with a conversation with Primal’s AI Search and SEO specialists.

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