What Is Google AI Mode, and How Is It Different from AI Overviews?

Google now has two different AI search experiences, and they are easy to confuse. AI Overviews are the summaries that appear at the top of ordinary search results. AI Mode is a separate, conversational search experience. They share a lot of plumbing, but they behave differently enough that you need to think about both. Here is what each one is, how they differ, and what it means for your visibility.

For how Google's engines fit alongside ChatGPT, Perplexity, and Copilot, see our engine explainer.

What are AI Overviews?

AI Overviews are the AI-generated summaries Google places at the top of a normal results page for certain queries. They give a quick answer, with links, above the traditional blue links, which are still there beneath. They do not appear on every search. Google shows them only when its systems judge the summary adds something to a standard result, so plenty of queries still return a classic page with no overview.

They tend to trigger on informational and how-to questions and on product research, the kinds of queries where there is a clear consensus across trusted sources to summarize.

What is Google AI Mode?

AI Mode is a separate, opt-in search experience that works like a conversation rather than a results page. You ask a question, get a synthesized answer, and can keep asking follow-ups while it holds the context of the session. For the person using it, it replaces the list of links with a back-and-forth, closer to using a chatbot than scanning a page of results.

It is built on Google's Gemini models and has grown quickly since launch, passing a billion users a month globally in 2026, with usage climbing steeply. It is the direction Google is pushing for people who want an end-to-end AI search experience.

How they differ

The important differences for a brand are these:

• Placement and depth. AI Overviews sit on top of a normal results page and give a quick summary. AI Mode is the whole experience, more conversational, and it goes deeper through follow-up questions.
• The sources they cite. This is the big one. Even though they share Google's infrastructure, they do not cite the same pages. An Ahrefs analysis of 540,000 query pairs found that AI Overviews and AI Mode cite the same URLs only around 14 percent of the time, even while reaching similar conclusions in about 86 percent of cases. AI Mode also tends to reference more sources per answer, around seven unique domains on average.
• Query fan-out, taken further in AI Mode. Both use a technique Google calls query fan-out, where a single question is broken into multiple sub-queries run in parallel, then synthesized into one answer. AI Mode leans on it heavily, decomposing a question into many sub-queries at once, which is why its answers tend to be broader and to pull from a wider, sometimes different set of sources.

The practical takeaway is that these are two surfaces, not one. Winning a spot in an AI Overview does not mean you will be cited in AI Mode for the same question, so they are worth tracking separately.

What both mean for your visibility

The encouraging part, confirmed by Google's own guidance, is that there is no separate AI algorithm to chase. Both surfaces are built on Google's understanding of the web, and the same fundamentals that earn strong organic performance, crawlable pages, genuinely useful content, and clear structure, are what feed the AI answers too.

Query fan-out does change one thing about how to think, though. Because Google is breaking a question into a cluster of sub-questions, ranking for a single keyword matters less than covering the whole cluster of intents around a topic well. Comprehensive, well-structured content that answers the related sub-questions has more chances to be pulled in.

How to show up in both

• Keep doing the SEO fundamentals. Rank well, stay crawlable, and make sure Google can render your content. This is still the foundation.
• Allow Google's AI crawler. Make sure you are not blocking Google-Extended if you want to be eligible.
• Cover topics comprehensively. Answer the cluster of related questions around a subject, not just one keyword, so query fan-out has more of your content to draw on.
• Structure for extraction. Answer-first sections, clear headings, and self-contained, well-sourced passages travel well into AI answers.
• Do not ignore YouTube. Google-owned video features prominently in its AI surfaces for many topics.

How to track them

Because the two surfaces cite such different sources, a single Google visibility number will mislead you. You want to see AI Overviews and AI Mode separately, tracked over time, alongside the other engines. Diploria treats them as distinct surfaces, so you can see where you show up in each rather than lumping them together.