AI visibility audit
Where your business appears, and where it does not, in the answers of ChatGPT, Gemini, Perplexity and Google's AI Overviews. And above all: what these engines say about you when asked, query by query.
GEO agency in Luxembourg
Your customers no longer search.
They ask.
GSO (generative search optimisation, also called GEO) is the service from AIxH, an SEO & GSO / GEO agency based in Luxembourg, that gets your business cited in the answers of ChatGPT, Gemini, Perplexity and Google's AI Overviews: AI visibility audit, content built to be cited, structured data and monthly citation tracking. All of it on 27 years of SEO foundations.
Your future customers put their questions to an AI. It answers by naming three companies. If yours is not among them, you do not exist in that conversation.
GSO is the work that gets you into those answers: content that generative engines can extract and cite, clean structured data, and authority built on the right subjects. Nothing magical about it: AI engines rely on the same foundations as Google. It is ground AIxH has worked for 27 years.
Generative engine optimisation (GEO), also called generative search optimisation (GSO), is the same discipline under the name most used internationally. A GSO agency and a GEO agency in Luxembourg do the same job: making your business visible and citable in the answers of generative engines. For classic rankings in Google, which remain the foundation of everything, AIxH offers a dedicated SEO service.
What is included
How do we get AI engines to cite your business?
AIxH's GSO / GEO service covers six workstreams: the AI visibility audit, the SEO foundations, content designed to be cited, structured data and technical signals, citation tracking, and running SEO and GSO together as a single project.
SEO foundations first
Generative engines rely on the same foundations as Google: clear content, a clean technical structure, authority on your subjects. Without those foundations, no GSO tactic holds. With them, everything else becomes possible.
Content built to be cited
AI engines cite what they can extract: direct answers, pages that deal with one precise question, wording that leaves no ambiguity. We rewrite what needs rewriting and create what is missing.
Structured data and technical signals
Schema.org, named entities, your site's accessibility to AI crawlers: the plumbing that answer engines read before deciding to cite you.
Citation tracking
We measure where and how your brand appears in generated answers, month after month. No abstract average position: observed citations, documented and compared over time.
SEO and GSO, one project
What improves your visibility in Google improves your chances of being cited by AI. We run both together: you do not pay for two services to get one piece of work.
Method
How does a GSO / GEO engagement work?
A GSO engagement with AIxH follows four steps: visibility audit, consolidating the foundations, content production, then continuous measurement. The quote is drawn up after the audit: the price follows the scope (site size, languages, competition, state of the SEO foundations) rather than a catalogue rate.
- AI visibility audit: What ChatGPT, Gemini, Perplexity and Google's AI Overviews say about you today, query by query.
- SEO & technical foundations: Structure, structured data, accessibility to AI crawlers: the foundations answer engines read before they cite.
- Citable content: Rewriting and creating pages designed to be extracted: direct answers, precise questions, verifiable facts.
- Citation tracking: A panel of queries replayed at fixed intervals, citations observed and compared month after month.
Transparency
How much hindsight do we really have on GSO?
Laboratory · aixh.com
Our first client: ourselves
GSO is a young discipline: nobody has ten years of hindsight, we do not either, and we would rather tell you so. So we test everything on our own presence: content structure, structured data, answer formats, tracking of our own citations in ChatGPT, Perplexity and Google's AI Overviews.
Every recommendation is tested on us before it is applied to you.
Foundations · since 1999
27 years of SEO behind the method
Those foundations are anything but young: 27 years of SEO, the same base on which generative engines build their answers. Understanding how engines read pages has been AIxH's trade since the late 1990s: the engines that now write answers have kept the same rules and tightened them.
Client case · Wellness · Luxembourg
MONDORF Domaine Thermal
SEO and web accessibility: more than 700 images without an ALT tag. An AI agent generated 6,000+ tags in 3 languages, with human validation: two days of work instead of twenty.
+55% SEO traffic from Google Images.
“I spent 27 years optimising for engines that ranked links. The ones that write answers read the same foundations: a clear site, verifiable facts, authority. That is where GSO starts, and there is no magic recipe.”
Resources
Our GEO and SEO insights
- Since 31 August, Search Console shows where sites appear in Google's AI, without their clicks →
- With AI Mode, your site becomes a source for Google rather than a destination for your customers →
- 81% of US marketers still call it SEO →
- From 345,000 to more than 600,000 in three months: Google's preferred sources button also weighs on AI answers →
- Google generalises AI summaries in search results: SEO remains the base, GEO becomes the condition for being cited →
- SEO and GSO are measured differently but rest on the same foundations →
- Google has denied it: the market's best-selling GEO tactic does nothing →
- AI sends publishers only 1.1% of their traffic, but reshapes their visibility →
- AI Overviews: French publishers take Google to the competition authority →
- GSO and SEO: what changes for an agency, and what stays the same →
- AI cites brands almost everywhere, but only recommends them on their core business →
- Google separates its AI answers from classic search, but keeps the figures to itself →
- Multilingual sites: ChatGPT cites English pages 2.6 times more than their real weight →
- Precise statistics gain up to 41% more visibility in AI answers: our 10 GEO rules →
- Google rolls out AI summaries in France: up to 30% fewer clicks for the top links →
- AI Overviews arrive in France before 23 September →
- Reddit, the new battleground for ranking in AI answers →
- Brands are betting first on content designed for AI engines →
- How much does an SEO agency cost in Luxembourg? Quotes, pricing models and public grants →
- Choosing an SEO or GEO agency in Luxembourg: four criteria that never lie →
- AI models search 3.2 times more often for brands they already know →
- AI Mode stopped citing its sources for 48 hours, Google confirms a bug in Gemini 3.8 Flash →
- Google rolls out its third spam update of 2026, targeting worthless production rather than AI content →
- Google volatility rises again after the August 2026 spam update comes to a close →
- Google suspends its parasite SEO penalties in Europe under pressure from the European Commission →
- All our SEO & GEO news →
FAQ
Frequently asked questions about GSO and GEO
What is GSO (generative search optimisation)?
GSO (generative search optimisation, also called GEO) is the work that gets a business into the answers of generative AI engines, ChatGPT, Gemini, Perplexity and Google's AI Overviews: content these engines can extract and cite, clean structured data, and authority built on the right subjects.
GSO, GEO, AEO: are they the same thing?
Yes, for the most part. GSO (generative search optimisation), GEO (generative engine optimisation) and AEO (answer engine optimisation) describe the same discipline: optimising a brand's visibility in the answers of generative AI engines. AIxH uses the term GSO; the method is identical whatever the name.
How much does a GSO / GEO service cost?
The price is set by quote, after the AI visibility audit. It depends on the size of the site, the number of languages, the competition on your subjects and the state of your SEO foundations. AIxH does not apply a catalogue rate. Write to hello@aixh.com to start the audit.
Which AI engines are covered?
AIxH works on and measures visibility in ChatGPT, Gemini and Google's AI Overviews, Perplexity, Claude and Copilot. Each engine has its own index and its own sources: the audit establishes where your business appears, engine by engine.
Does GSO replace SEO?
No. Generative engines rely on the same foundations as Google: clear content, a clean technical structure, authority. AIxH runs SEO and GSO as a single project: what improves your visibility in Google improves your chances of being cited by AI, and you do not pay for two services to get one piece of work.
How long before GSO results show?
GSO is a long-term lever: the effects build over several weeks to several months, the time it takes for AI engines to recrawl the site and for authority to consolidate. That is why AIxH measures citations month after month instead of promising a deadline.
How does AIxH measure GSO results?
AIxH replays, at fixed intervals, a panel of queries representative of your customers on each AI engine and documents the citations observed: where your brand appears, how it is described, alongside which competitors. No abstract average position: observed citations, compared over time.
Client reviews
What do clients say about our SEO & GSO work?
★★★★★ 5.0 / 5 on Google (43 reviews) · See our Google profile →
Reviews were left on Google in French and are translated here.
“I called on AIxH for an SEO, GEO and GSO assignment to improve our site's visibility on Google and in search engines based on generative AI. The team quickly identified the optimisations needed to strengthen our organic rankings, improve the quality of our content and adapt our strategy to the new AI-driven search habits.”