What are AI answers in search (AI Overviews)?

You type a question into a search engine, and before the usual list of links there's a neat paragraph that answers it, with small source links beside it. Maybe you read it and close the tab. That paragraph didn't exist until you asked. It was written in the moment by artificial intelligence (AI), and on Google it's called an AI Overview. Other search tools offer something similar.

The search engine still does what it always did. It finds pages and ranks them. Then a language model reads from the top results and writes a short summary. Google says these summaries rest on its usual ranking systems, and that it may run several related searches behind the scenes to cover different parts of your question. So the summary can only be as good as the pages it drew on, and as careful as the model that read them.²³

The links beside the summary point to pages it drew on, and they're your way to check. If a sentence matters, open the page and see whether it says the same thing, in the same context. Often it will. Sometimes the summary has dropped a detail that changes the meaning.¹³

You won't see one every time. Google says AI Overviews appear when its systems judge that a generated summary will be especially helpful, such as when you want to understand something quickly from a range of sources. How often is that? In March 2025, the Pew Research Center tracked the Google searches of 900 adults in the United States and found that about 18 percent produced an AI summary.¹⁴

The summaries can get things wrong, and Google says so on its own help page: AI responses may include mistakes. A model can misread a page, miss the context, or blend two sources into one claim that neither of them made. And when a question is rare or odd, there may be few good pages to draw on. Google calls that a data void. In May 2024, soon after the feature launched in the United States, a few summaries repeated forum jokes as if they were advice, including one about putting glue on pizza. Google's head of search wrote afterward that it had cut back on satire and humor in the summaries. The summary can still save you time, as long as you treat it as a starting point.¹²⁵

Plenty of people read the summary and go no further. In the same Pew study, people clicked a regular search result on 8 percent of visits when an AI summary appeared, against 15 percent when none did. Only about 1 percent clicked a link inside the summary itself. That's quicker for you. For the sites that wrote the information, it means fewer visitors.⁴

For a quick fact, the summary may be all you need. For your health, your money, or anything you're about to act on, open at least one of the sources and read it yourself. Which search this week would have been worth one more click?