Google AI Mode is a separate mode inside Google Search where a Gemini model answers a question with a written response instead of a list of links. It runs many searches in the background, reads the pages that come back and writes one answer with links to the sources it used. People reach it through a tab on the results page or a dedicated entry point, and they can keep asking follow-up questions in the same conversation.
AI Mode is one example of AI search: a language model sits on top of a search index and writes from what the index returns. In Google's case the index is the same one behind ordinary Google results, so the pages it can read are the pages Google has already crawled and indexed.
How does Google AI Mode work?
Google describes AI Mode as running on a custom version of Gemini, its family of large language models. Each answer is produced through a sequence that most AI search products share.
- Read the question and the conversation. A follow-up such as "which one is cheaper?" is interpreted using the previous turns.
- Split the question into subtopics. The model writes many narrower searches from one broad question. Google calls this query fan-out.
- Search the index. Each generated query goes to Google Search, and sometimes to structured data sources Google holds, such as shopping listings, maps data or current information.
- Pick passages. The system reads the returned pages and keeps the sections that answer parts of the question.
- Write the answer. The model combines those passages into one response and attaches links, usually shown beside the text or in a list of sources.
Fetching documents first and writing from them second is called retrieval-augmented generation. The searches are generated fresh for each question, so two people asking the same thing can see different sources.
How is AI Mode different from AI Overviews?
Google has two features that put generated text in Search, and they are easy to confuse. A Google AI Overview is a summary that appears above the normal results for some queries. AI Mode replaces the results page with a conversation.
| AI Overviews | AI Mode | |
|---|---|---|
| Where it appears | Above the standard list of links | In its own mode, separate from the standard results |
| When it appears | Only for queries where Google decides a summary helps | Whenever the user chooses the mode |
| Follow-up questions | Limited | Built for a back-and-forth conversation |
| Searches per question | Fewer | Often many, through query fan-out |
| Typical question length | Short, keyword-style | Longer, multi-part questions |
In practice, AI Mode handles questions that would normally take several searches. Someone comparing products, planning a trip or researching a technical problem can ask everything at once and refine it afterward.
What can people do in AI Mode?
AI Mode accepts more than typed text. The exact options vary by country, language and device, but they include:
- Long questions with several conditions, such as a budget, a location and a use case in one sentence.
- Follow-up questions that build on the previous answer.
- Voice input on mobile.
- Images, for example a photo of a product or a plant, combined with a question about it.
- Results that mix text with tables, product cards, maps or links to local businesses.
All of these end up as searches against Google's systems. An image question, for instance, is turned into text descriptions and queries before the model writes its answer.
How does AI Mode choose which pages to link?
A page has to be in Google's index and eligible to appear with a snippet before AI Mode can use it. According to Google, AI Mode needs no separate markup or file: the same signals that make a page show up in Search apply. The fan-out queries then decide which pages are retrieved, and the passage-selection step decides which ones are quoted.
Since each question generates many queries, a page can be cited for a subtopic it ranks well for even when it would not rank for the original question. A page that clearly answers one narrow part of a larger question, such as a price range, a compatibility detail or a definition, has a chance to appear. How AI search chooses which sources to cite describes the ranking and selection steps in more detail.
The model also tends to favor passages that make sense on their own. A short paragraph that states a fact in its first sentence is easier to pull into an answer than a point spread across several screens of text.
What does AI Mode mean for a website?
Access works through Google's normal crawler. AI Mode reads pages that Googlebot has fetched, so blocking Googlebot in robots.txt removes a page from AI Mode along with the rest of Search. The Google-Extended token, which controls use of content for some Gemini products, does not remove a page from AI Mode or AI Overviews. To limit how a page is used, rely on page-level controls such as noindex, nosnippet and max-snippet, which Google says apply to its AI features in Search.
Measurement is less direct. Clicks and impressions from AI Mode are counted in Google Search Console as part of web search performance, Google has said, with no separate filter. Visits from AI Mode links usually arrive with a Google referrer, so analytics tools tend to record them as ordinary Google organic traffic. From these reports, a site owner cannot easily tell how often AI Mode named the brand or which competitors appeared next to it.
To fill that gap, AI visibility is usually measured by running a fixed set of questions in AI Mode and other AI search products on a schedule and recording which brands and sources appear each time. Answers change between runs, so a single check is a weak signal, as explained in why one AI visibility check is not enough. For a website, being indexed and ranking for narrow subtopics now affects whether it is mentioned in an answer that the user may read without clicking any link.
