AI Overviews and AI Mode: SEO and GEO for Google's AI answers
AI Overviews are summaries written by Google's AI at the top of some results; AI Mode is a tab where people ask complete questions and follow up. In the UK, AI Overviews arrived in August 2024 and AI Mode in July 2025. To be cited, Google only asks that a page is indexed and can be shown with a snippet: SEO remains the foundation, and no special optimisation is needed.
Contents
- AI Overviews and AI Mode: what are they?
- AI Overviews, AI Mode and ChatGPT: the differences
- How Google chooses the pages it cites
- SEO, AI and GEO: what matters to appear in AI Overviews
- What Google says not to do
- Can you opt out of AI Overviews?
- Measuring your presence in AI Overviews and AI Mode
- Frequently asked questions: AI Overviews, AI Mode, SEO and GEO
AI Overviews and AI Mode: what are they?
Since August 2024, Google has shown AI Overviews in the UK, and since March 2025 in Ireland: a short text written by AI at the top of the results page, with links to the pages that support it. Google says they only appear when its systems determine that an AI-powered response is helpful for the search.
AI Mode goes further. It opens in a tab next to Images or News, or from an AI Overview. People ask a complete question, get a written answer with links, then follow up with more questions, as in a conversation. It has been available in the UK since July 2025, and in Ireland since October 2025.
For a business, what's at stake is the same as with ChatGPT: when the answer cites a few sources, being one of them.
AI Overviews, AI Mode and ChatGPT: the differences
| AI Overviews | AI Mode | ChatGPT | |
|---|---|---|---|
| Where | At the top of Google results, for some searches | A Google tab, as a conversation | The ChatGPT app and website |
| Who decides to show it | Google, depending on the search | The user, who opens the tab | The user |
| Where the AI finds its sources | Google's index | Google's index, with several searches run in parallel | Its OAI-SearchBot crawler and third-party search engines |
| To be cited | An indexed page that can be shown with a snippet | The same condition | A page accessible to OAI-SearchBot and well indexed |
| To opt out | A Search Console setting | The same setting | The robots.txt file |
How Google chooses the pages it cites
Google explains this in its documentation: to build an answer, AI Overviews and AI Mode can run several related searches at the same time, on the subtopics of the question. Google calls this technique “query fan-out”. While the answer is being written, its models identify other pages that support it, which makes it possible to show a wider range of links than a classic search.
These pages come from Google's index. Its guide published in May 2026 sums it up: SEO best practices still apply, because these features rely on Search's ranking and quality systems.
In practice, a page that clearly answers a sub-question can be cited, even if it isn't at the top for the main question. For “Which joiner should I choose for a bespoke kitchen in Manchester?”, Google may search in parallel for prices, lead times, materials and reviews: every page that clearly answers one of these points has a chance.
SEO, AI and GEO: what matters to appear in AI Overviews
1Be indexed and eligible for a snippet
It's the only technical requirement set by Google. Check in Search Console that your important pages are indexed, and that no nosnippet tag, or overly low max-snippet limit, prevents Google from using a snippet from them.
2Answer the questions and their sub-questions
One page per service and per area, an answer in the very first sentence, then the details your customers ask for: guide prices, lead times, area covered, after-sales service, steps. An FAQ uses their questions, in their words.
3Text that Google can read
Text in the page's code, not in an image or a PDF; fast pages that are easy to read on mobile; useful images and videos, which Google lists among good practices.
4Accurate, consistent information
Structured data that matches what the page shows: Google finds it useful, without it being required for its AI features. For a local business, a complete Google Business Profile; for a shop, an up-to-date Merchant Center feed: Google mentions both tools in its guide.
5A real reputation
Customer reviews, mentions in the press and in your industry's directories. Google warns against fabricated mentions: they fall under its spam policies.
What Google says not to do
In its May 2026 guide, Google dismisses several common beliefs:
- creating special files or markup for AI: unnecessary; the llms.txt file, Google says, neither helps nor harms visibility in its results;
- breaking text into small chunks for AI: nothing requires it, and there is no ideal length;
- writing in a particular way for AI: write for your customers;
- producing pages in bulk or fabricating mentions: these practices go against its policies.
Can you opt out of AI Overviews?
Yes. Since 31 August 2026, a Search Console setting, open to all websites, lets you stop appearing in AI Overviews, AI Mode and AI Overviews in Discover, and stop being used to build their answers. Google says this choice isn't used as a ranking factor in traditional results; it doesn't apply to the Gemini app.
Other controls are more precise: the nosnippet, data-nosnippet and max-snippet tags limit what Google uses from a page, in traditional results as in AI features; the noindex tag removes the page from Search. The Google-Extended control, for its part, changes nothing about your presence in Google Search or in AI Overviews: it concerns training and other Google AI systems.
For a business looking for customers, opting out of AI Overviews usually means leaving the space to its competitors. This setting is mainly of interest to publishers who live off their content.
Measuring your presence in AI Overviews and AI Mode
- In Search Console: clicks and impressions from AI Overviews are counted in the Performance report, “Web” search type, along with the rest; those from AI Mode have been counted there since June 2025. Since 31 August 2026, Search Console has also provided information specific to AI features: impressions, pages that appear, countries.
- By hand: search for your customers' questions in a private browsing window, from your town, and note the sources cited. Answers vary from one search to the next: a single try tells you almost nothing.
- With iasyo: the full audit and monitoring check Google's AI Overviews, along with ChatGPT, Perplexity, Gemini and Claude, and show who is cited instead of you. See the methodology
Frequently asked questions: AI Overviews, AI Mode, SEO and GEO
How do I turn on AI Mode in Google?
There's nothing to turn on: Google has offered it in the UK since July 2025, and in Ireland since October 2025. Click the “AI Mode” tab, next to “Images” or “News”, or open it from an AI Overview. If it doesn't appear yet, update the Google app or try again later.
Are AI Overviews the same as ChatGPT?
No. AI Overviews and AI Mode are Google Search features, which rely on Google's index. ChatGPT is OpenAI's service, with its own search crawler. The principles for being cited are similar; the settings are different.
How do I appear in AI Overviews?
With indexed pages that can be shown with a snippet and that clearly answer the question and its sub-questions, on a fast, trustworthy website. There's no sign-up and no dedicated tag.
Do AI Overviews need special optimisation?
No, according to Google: no special file, markup or writing style. The SEO and GEO work described in this guide is enough.
Do AI Overviews reduce clicks?
On some searches, yes: when the answer is enough, people click less. Studies carried out in the UK and Germany measure a drop when an AI Overview appears; Google disputes the extent. The most reliable approach is to measure on your own website, in Search Console.
Can I remove my website from AI Overviews?
Yes, with the Search Console setting open to all websites since 31 August 2026, with no effect on your ranking in traditional results. For a business looking for customers, it's rarely a good idea.
Sources
Google Search Central, “AI features and your website”, accessed 28 September 2026
Google Search Central, “Google's Guide to Optimizing for Generative AI Features on Google Search”, May 2026
Google, “New opportunities, control and insights for website owners”, 3 June 2026, updated 31 August 2026
Google Search Central, documentation updates, 16 June 2025 (AI Mode in the Performance report)
Google, “Google's common crawlers” (Google-Extended), accessed 28 September 2026
TechCrunch, “Google is bringing AI overviews to India, Brazil, Japan, UK, Indonesia and Mexico”, 16 August 2024, accessed 29 September 2026
PPC Land, “Google expands AI Overviews to more European markets”, 27 March 2025, accessed 29 September 2026
Cybernews, “Google AI Mode finally made available across Europe”, 8 October 2025, accessed 29 September 2026