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A growing share of buyers skip the list of ten blue links. They type a full question into ChatGPT or Gemini: which accountant near me is good with freelancers? The assistant replies with three or four names.

An AI SEO agency works on one goal: your name among those few. That takes a website machines can read, facts that match everywhere, and a presence on the sources the assistants consult.

We measured how this works in practice, with our own study of 100 small businesses. The figures on this page come from that study.

For questions about local companies and current providers, AI assistants search the web live. They read a handful of pages and summarize them into an answer with a few names.

Each assistant leans on a search index. Gemini and AI Overviews draw on Google. Microsoft Copilot draws on Bing. ChatGPT fetches pages with its own crawler, called OAI-SearchBot, and works with search partners such as Bing.

Google's Search Central documentation states that AI Overviews have the same technical requirements as regular search: a page that is indexed and eligible to show a snippet. Solid SEO is therefore the foundation of every AI search project.

On September 28, 2026, Delta Six asked the AI assistant Claude two questions about 100 Dutch small businesses, with web search switched on. First: which business in this trade and town do you recommend? Second: what do you know about this business by name?

The lesson: being known and being recommended are two separate things. The assistant finds almost every business by name. For a recommendation it chooses from everything it reads about a trade and a town, on average 12.1 websites per answer.

The study is a snapshot of one assistant on one day, with Dutch businesses. AI answers vary per run and per user, so we treat the figures as an indication and measure again for every client.

AI SEO services cover the website itself and everything the web says about you. This is the order we work in.

1. Measure firstWe ask several assistants the questions your customers ask, a number of times each. You see how often you are named, which competitors appear and which sources the assistant used.
2. Text in the HTMLAI crawlers mostly read the HTML the server sends and rarely run JavaScript. We build pages whose text is in the source code from the first byte.
3. Crawler accessWe check robots.txt, the file that tells crawlers where they may go, so OAI-SearchBot, Claude-SearchBot, Bingbot and Googlebot can fetch your pages.
4. Structured dataWe add schema markup: a machine-readable block with your name, address, phone number, opening hours and profile links. In our study 11 of 100 websites had this complete.
5. Answers an assistant can quoteEach page opens with a direct answer and states your name, trade and town in one sentence. Headings follow the questions customers type.
6. Matching facts everywhereSame name, address, phone number and hours on your website and every profile. Conflicting facts showed up in 29 of 100 answers in our study.

The field has several names. Generative engine optimization, GEO for short, means optimizing for engines that generate an answer. Some call it answer engine optimization or AI search optimization.

A generative engine optimization agency and a GEO agency do the same work described on this page. Choose on method and proof, and treat the label as a detail.

One honest note about llms.txt, a proposed file that summarizes a site for AI models. In our study 14 of 100 websites had one, and those businesses were recommended about as often as the rest.

In 81 of 100 answers in our study, the assistant consulted a review platform, a business directory or a list site. Your own website appeared among the sources in 43 of 100 answers. The recommendation is shaped largely elsewhere.

1. Review platformsWe identify the platforms that matter in your trade and country, such as Trustpilot, Yelp, Checkatrade or Clutch, and help you build complete profiles with recent reviews.
2. Google Business ProfileA complete profile with fresh reviews strengthens your name in Google, the index behind Gemini and AI Overviews.
3. Lists and directoriesWe find the best-of lists and trade directories that rank for your service and town, so you know where a listing counts.
4. Bing Webmaster ToolsWe submit your sitemap to Bing and confirm your key pages are indexed there, because Copilot and ChatGPT lean on it.

Every assistant makes its own selection. In a sub-sample of 24 businesses in our study, ChatGPT recommended 13 and Claude 9. Only 8 were recommended by both.

So a ChatGPT SEO agency that reports one overall score gives you half the picture. We track ChatGPT, Gemini, Claude and AI Overviews separately and repeat the questions every quarter.

Results build gradually. Assistants refresh their sources at their own pace, so we report what changed and what we do next, and we promise effort and transparency above guaranteed positions.

Optimization for AI search is a standard part of every website we build, together with monthly SEO, review follow-up, online booking and an AI chatbot. We build on our own platform with hand-written code, so the text is always in the HTML.

We build your complete custom website first, at our own expense. You see it in a 15-minute online showcase. Happy with it? Then it goes live within two weeks.

Two months after launch you choose again. Stop after two improvement rounds and you get your money back.