AI Overviews: What Google's AI Summaries Are

AI Overviews are AI-generated summaries that Google Search shows above the regular results for some queries. They answer the question in a few paragraphs or bullet points and link to the web pages the answer is based on. Google describes them as a quick way to get the gist of a topic, with links for going deeper.

At a glance

Type: AI-generated summary above the search results
Since: announced for the U.S. on May 14, 2024 (SGE experiment from May 10, 2023)
Requirements for links: page indexed and eligible for a snippet, no additional requirements
Visible?: impressions in the Search Console generative AI performance report
Docs: Google: AI features and your website

Last checked: October 8, 2026

How are AI Overviews created?

Google uses a Gemini model customized for Search. According to Google Search Central, AI Overviews and AI Mode rely on query fan-out. The system issues several related searches across subtopics and data sources and combines the results into one response. Google says this lets the overview link to a wider and more diverse set of pages than a single search would.

Whether an overview appears is decided per query. Google shows one when its systems judge it more helpful than the standard results alone.

A page can appear in the answer because it answers one sub-question well, without ranking for the original question (an inference from the method, not a Google statement). Sources: Google Search Central: AI features and your website; Google Blog: AI in Search, Google I/O 2025 (May 20, 2025).

Where did AI Overviews come from?

Google announced the Search Generative Experience (SGE) on May 10, 2023 as an opt-in experiment in Search Labs, available in the U.S. in English. On May 14, 2024, Google announced that the feature, now named AI Overviews, would roll out to all users in the U.S. Expansion to other countries and languages followed in stages. The label SGE is outdated and only appears in older articles.

AI search: from ChatGPT to AI Mode

November 30, 2022OpenAI releases ChatGPT as a free research preview. The model is based on the GPT-3.5 series.Source: openai.com
February 6, 2023Google announces its conversational AI service Bard and opens it to trusted testers first.Source: blog.google
February 7, 2023Microsoft launches the new Bing with AI chat and complete answers inside search.Source: blogs.microsoft.com
May 10, 2023Google introduces the Search Generative Experience (SGE) as an experiment in Search Labs. At launch it is limited to the US and English.Source: blog.google
November 15, 2023Microsoft renames Bing Chat to Copilot. General availability follows from December 1, 2023.Source: blogs.microsoft.com
May 14, 2024At Google I/O, Google announces AI Overviews for everyone in the US, with more countries to follow.Source: blog.google
July 24, 2024Bing previews its generative search experience. At first it appears for a small share of queries only.Source: blogs.bing.com
July 25, 2024OpenAI tests SearchGPT as a temporary prototype with a small group of users and publishers.Source: openai.com
October 28, 2024AI Overviews roll out in more than 100 countries and territories. Google expects more than 1 billion monthly users.Source: blog.google
October 31, 2024OpenAI launches ChatGPT search, first for paying users and the SearchGPT waitlist. Answers link to their sources.Source: openai.com
December 11, 2024Google launches Deep Research in Gemini Advanced. It browses the web on its own and compiles a report.Source: blog.google
December 16, 2024ChatGPT search becomes available to all logged-in users in regions where ChatGPT is offered.Source: openai.com
February 2, 2025OpenAI introduces deep research in ChatGPT, starting with Pro users.Source: openai.com
February 5, 2025ChatGPT search becomes available without signing up in all regions where ChatGPT is offered.Source: openai.com
March 5, 2025Google introduces AI Mode as an experiment in Search Labs. Google One AI Premium subscribers get access first.Source: blog.google
March 20, 2025Anthropic adds web search with citations to Claude. It launches as a preview for paid users in the US.Source: anthropic.com
March 26, 2025AI Overviews launch in Germany in German and English, together with other European countries. They are shown to signed-in users aged 18 and over.Source: blog.google
May 20, 2025At Google I/O, Google rolls out AI Mode to everyone in the US, with no Labs sign-up needed.Source: blog.google
May 20, 2025AI Overviews are available in more than 200 countries and territories and in more than 40 languages.Source: blog.google
May 27, 2025Web search in Claude becomes available globally on all plans.Source: anthropic.com
June 16, 2025Data from AI Mode counts towards the totals in the Search Console Performance report.Source: developers.google.com
October 8, 2025AI Mode launches in Germany, Austria and Switzerland as part of an expansion to more than 40 new countries and territories.Source: blog.google
June 3, 2026Search Console adds dedicated performance reports for generative AI features such as AI Overviews and AI Mode, first for a subset of sites.Source: developers.google.com
August 31, 2026The Search Console reports on generative AI features become available to all websites worldwide.Source: developers.google.com

Dates follow the publisher's announcement; rollouts often took days or weeks. Google's English post on AI Overviews in Europe carries the US date of March 25, 2025, the German post March 26, 2025. Last checked: October 8, 2026.

What do AI Overviews mean for websites?

Google states that pages need to be indexed and eligible to show with a snippet to be linked in an AI Overview. There are no additional technical requirements, special files or schema types. A page Googlebot cannot crawl or index will not appear.

Site owners have three levels of control:

nosnippet, data-nosnippet and max-snippet limit which text can be used.
noindex removes a page from Google Search entirely.
A Search Console setting, rolled out worldwide by August 31, 2026, excludes a whole site from Google’s generative AI features without affecting regular rankings.

For measurement, clicks from AI Overviews count toward the Web search type in the Performance report. The separate Generative AI performance report shows how often links to a site appeared in AI Overviews and AI Mode, broken down by page, country and device. It reports impressions only.

Example

As an illustrative example, a search for “difference between 301 and 302 redirect” can trigger an AI Overview. It explains both status codes in a few lines and links the pages it drew from, such as developer documentation and tutorials. The organic results follow below.

Google results page with an AI Overview above the search results, including source links — Google Search. Last checked: October 2026.

Frequently asked questions

How do I get my site into an AI Overview? There is no separate submission. Pages need to be indexed, snippet-eligible and relevant to the query or one of its sub-queries.

Is an AI Overview the same as ChatGPT? No. AI Overviews are part of Google Search and are built from Google’s index. ChatGPT is a separate product from OpenAI with its own search crawler.

Should I trust Google AI Overviews? Google labels generative AI features as able to make mistakes. Shortly after the 2024 launch, Google acknowledged “odd and erroneous overviews” and described more than a dozen technical improvements. Checking the linked sources is the safest approach.

Sources

AI features and your website – Google Search Centraldevelopers.google.com
Supercharging Search with generative AI – Google Blog, 2023-05-10blog.google
Generative AI in Search: Let Google do the searching for you – Google Blog, 2024-05-14blog.google
AI Overviews – Google Searchsearch.google
AI Overviews: About last week – Google Blog, 2024-05-30blog.google
Generative AI performance report – Search Console Helpsupport.google.com
Search generative AI features control – Search Console Helpsupport.google.com
AI Overviews – Wikipedia (secondary source for timeline and 2024 errors)en.wikipedia.org

Last updated: October 8, 2026