GEO Agency: Visible in ChatGPT, Gemini & AI Overviews

Measure AI visibility: mentions, sources, competitors
Content and technology that AI systems cite
Authority on the websites AI systems read

Request a GEO audit

Customer satisfaction

4.9

Based on 33 reviews

Generative Engine Optimisation (GEO)

Rheinwunder, your GEO agency

More and more people no longer ask only Google. They ask ChatGPT, Gemini, Claude or Perplexity. And in Germany, Google Search itself has often shown an AI Overview above the results since March 2025. Brands that are mentioned there have a good chance of making the shortlist. Brands that are missing are easily overlooked. Generative Engine Optimisation (GEO) aims to ensure that your brand appears in these answers, is described correctly and is cited with a link to your website. To do this, we combine three disciplines we have practised in-house for years: SEO, tracking and content.

Measure before we optimise

Everything starts with a measurement based on real questions from your target group: how often do ChatGPT, Gemini and Claude mention your brand, which competitors appear and which sources are cited? Without this baseline, progress cannot be proven.

Content that AI systems can cite

AI systems pick up statements that are clearly worded, backed up and easy to find. We make sure your key facts are on your website, not just in PDFs, that they do not contradict each other and that crawlers can reach them.

Authority where AI does its reading

A large share of the sources in AI answers are other websites: trade media, comparison lists, review portals, forums and videos. That is why GEO also includes work beyond your own website.

Our GEO services

From the audit to ongoing support

Two men talk in front of a computer screen showing charts.

You can start with a single module or have us look after GEO on an ongoing basis. For paid visibility alongside AI answers there are also ChatGPT Ads, and for your team the GEO seminar.

GEO audit

Where does your brand stand today? We measure your visibility in ChatGPT, Gemini and Claude, from a compact starter set to several thousand prompts, compare you with your competitors and check whether the answers are correct. More about the GEO audit

AI monitoring

Ongoing measurement of mentions, share of voice and cited sources, complemented by AI crawlers in your log files and AI traffic in analytics. More about AI monitoring

AI SEO

Preparing your website’s content and technology so that Google AI Overviews, AI Mode and other systems can find, understand and cite it. This also includes a grounding page: a fact page with verified company facts and matching Organization schema that AI systems can use as a reliable source. More about AI SEO

Log file analysis

Which pages do Googlebot, ChatGPT, Claude and others actually fetch? We analyse your server log files, separate genuine from fake bots and find errors such as invented URLs. More about log file analysis

How we work

Six steps to more AI visibility

GEO is not a one-off project. AI systems change their sources and answers all the time. That is why we work in a fixed cycle of measuring, implementing and measuring again.

Audit and baseline

We measure how AI systems currently talk about your brand, your products and your competitors. The result is the basis for every further decision.

Prompt research

Using Search Console, keyword data and customer questions, we identify the questions your target group actually asks AI systems. We derive the prompts from this data rather than simply making them up.

Action plan

We prioritise by impact and effort, split into content, technology and external presence. You can see what is quick to do and what takes longer.

Implementation on your website

Adding to or merging content, moving facts out of PDFs onto HTML pages, removing contradictions, checking crawler access and structured data.

Authority beyond your website

Building mentions in trade media, lists and portals, maintaining profiles and reviews, placing your own expert articles.

Monitoring and adjusting

We re-measure at fixed intervals, discuss the results in regular meetings and adapt the measures to new models and answers.

What does your brand look like in ChatGPT?

Start with a GEO audit.

You will find out how often AI systems mention you, who is mentioned instead of you and where the answers about your company are wrong.

Request a GEO audit

GEO in client projects

Three examples from our GEO projects

The following three examples come from Rheinwunder projects and analyses in 2026, anonymised here.

Fact check for a large organisation (September 2026): we compared 450 AI answers (150 questions in ChatGPT, Claude and Gemini) with the content of the organisation’s website. Only 20% were fully correct, 37% correct but imprecise, 38% partly wrong and 2% wrong; the remaining 3% had no connection to the organisation. Around a third of the errors could be traced back to the organisation’s own website: information was only available in PDFs, missing altogether or contradictory across different pages. These are exactly the points that can be fixed.

Winery with an online shop (September 2026): when asked about the winery by name, the AI systems mentioned it in 21 of 24 answers. For general questions about wine recommendations from the region, only in 26 of 126, while a competitor appeared in 59. Gemini also gave a wrong address and wrong opening hours.

Log file analysis of a high-traffic website (August and September 2026): over ten days, we counted almost 29,000 requests from ChatGPT-User, an average of around 2,900 a day. This is an upper limit, because monitoring tools also trigger such requests. They included all 100 pages with the most Google clicks. 15% of Claude’s requests ended on 404 pages because the model had invented URLs. We created a redirect list for these.

An honest assessment

What works in GEO and what does not

There are plenty of promises around GEO. We stick to what we can measure.

Works: clear answers to real questions, facts on HTML pages instead of in PDFs, consistent information on every page, comparison and guide content, mentions in trade media and comparison lists, well-maintained profiles on review portals.
Works everywhere: a clean technical foundation, because content that only loads via JavaScript or sits in PDFs does not reach every crawler.
Works mainly for Google: structured data helps Google classify content. According to Google, there is no special markup for AI Overviews; the same fundamentals apply as for regular search.
Overrated: the llms.txt file, Markdown copies of pages and AI-generated text at scale. In our log file analysis of a large website over ten days, none of the major AI providers even requested an llms.txt file. Google also states that no special AI text files are needed for AI Overviews.

That is why we do not promise positions in AI answers. We show you where you stand, what can be changed and whether it works.

Frequently asked questions about GEO

GEO FAQs

Answers to the questions we hear most often in initial meetings.

What is Generative Engine Optimisation (GEO)?

GEO covers all measures that help a brand appear in answers from AI systems such as ChatGPT, Gemini, Claude, Perplexity or Google AI Overviews, be described correctly and be cited as a source. The term comes from a 2023 study by researchers at Princeton University and the Indian Institute of Technology Delhi. Find out more in our knowledge article on Generative Engine Optimisation.

Doesn't our SEO already cover this?

Partly. SEO is the foundation, especially for Google AI Overviews and AI Mode. ChatGPT, Claude and Perplexity, however, use their own search sources, which do not have to match your Google rankings, and they rely heavily on other websites. Only a dedicated measurement shows whether your brand appears in the answers.

We have no budget for this. Is it still worth getting started?

A GEO audit is a manageable, one-off step. It shows whether your competitors appear much more often in AI answers than you do and whether incorrect information about your company is circulating. Afterwards, you decide whether and to what extent you want to continue.

Isn't it too early for GEO?

Now is a good time to measure, because it creates a baseline. If you collect figures today, you can prove later what has changed. And incorrect statements about your company in AI answers can already cause harm today.

How do you measure GEO success?

Through mentions and share of voice across a fixed set of prompts, the sources cited, AI crawler requests in your log files and visits from ChatGPT, Perplexity and others in analytics. Important: Google does not report clicks from AI Overviews and AI Mode separately; they are part of your organic Google traffic. You will find details under AI monitoring.

How quickly will we see results?

Corrections on your website can take effect as soon as AI systems fetch the pages again. For systems with live search this is faster than for knowledge that comes from training data. Building mentions on other websites takes longer. We measure at fixed intervals and show you how things develop.

Do I need an llms.txt file?

It does no harm, but we have not seen any measurable effect so far. In our log file analysis of a large website, the major AI providers did not request the file. Pages that are easy to reach and clearly worded matter more. Find out more in the knowledge article on llms.txt.

Which companies benefit from GEO?

Any company whose customers research or compare before buying: B2B providers, retailers, service providers, associations and organisations whose customers need a lot of advice. Smaller businesses benefit too, for example when AI systems are asked for local recommendations.

Can you also advertise in ChatGPT?

Yes. ChatGPT Ads have been displayed in Germany since 24 August 2026 and have been bookable via the self-serve Ads Manager since September. The ads appear, clearly labelled, below the answer and only in the Free and Go plans. We manage ChatGPT Ads as part of our SEA services. Paid and organic AI visibility complement each other.

Let's talk about your AI visibility

How visible is your brand in AI answers?

In an initial meeting, we clarify which questions matter for your business and what a GEO audit could look like for you. No obligation, and with an honest assessment.

Customer satisfaction

4.9

Based on 33 reviews

Request a GEO audit

Ralph GrundmannFounder and Managing DirectorCall: 0228 243 313 53