In 2026, more than 40% of information searches will use an artificial intelligence engine: ChatGPT, Google Gemini, Perplexity or Google AI Overview. This revolution is fundamentally changing the way web users find companies, services and products. Google's "10 blue links" are no longer the only point of entry to your website.
GEO (Generative Engine Optimization) is the discipline that consists of optimising a website's visibility in these AI engines. Where traditional SEO targets traditional search results, GEO targets responses generated by artificial intelligence. It's a paradigm shift: it's no longer about being "well positioned", but about being cited, recommended and argued by an AI.
Why GEO has become indispensable
When a traveller asks ChatGPT "What's the best family campsite in the Dordogne?", the AI doesn't send back 10 links. It recommends 3 to 5 establishments by name, with arguments drawn from their website, their Google reviews and their Schema.org file. This behaviour is found in Gemini, Perplexity and Google AI Overview.
If your site is not structured for AI, you are simply missing out on this new showcase. Your competitors, on the other hand, are capturing these prospects without you even knowing it. And unlike SEO, where you can monitor your positions in Google, AI visibility is largely invisible without a dedicated tool.
The scale of the phenomenon in figures
According to recent studies, 65% of ChatGPT users use AI to search for local services at least once a week. In the tourism sector, this figure rises to 78%. In the legal profession, 52% of litigants have already asked an AI for a lawyer recommendation. These figures continue to rise quarter after quarter.
The 4 pillars of GEO
At GEO-Auditor, we have identified 4 fundamental pillars that determine your visibility in AI engines. Each pillar is scored out of 22 points, for a total score standardised at /100.
Pillar 1: Identity and positioning
Your site must clearly communicate who you are, where you are and what you do. This means :
- An optimised and unique title, incorporating your activity and location
- A powerful meta description that summarises your value proposition
- A unique H1 per page, consistent with the title
- A complete Schema.org adapted to your type of activity (Campground, Hotel, Attorney...)
- NAP (Name, Address, Phone) consistency between your site and your directory listings
Why NAP is crucial for AIs
AIs cross-reference information from multiple sources (your site, Google Business Profile, Yellow Pages, TripAdvisor) to check that your data is consistent. A different telephone number or an out-of-date address creates uncertainty, which will damage your credibility. NAP consistency is one of the most important confidence signals for language models.
Pillar 2: Content and documentation
AIs prefer sites with rich, structured and up-to-date content. This pillar evaluates the depth of your content, the presence of thematic pages, the quality of your HTML structuring (hierarchical headings, semantic HTML) and your E-E-A-T signals (Experience, Expertise, Authoritativeness, Trustworthiness).
The formats best exploited by AIs
Structured FAQs with FAQPage markup are the king of GEO formats. Thematic guides, blog articles with clear subheadings, bulleted lists and comparative tables are also very well exploited by LLMs. Conversely, content in text blocks with no structure is difficult to use.
Pillar 3: Technical performance
SSL, mobile speed (Core Web Vitals), sitemap.xml, robots.txt, canonical, lazy loading - the technical fundamentals remain essential. A slow or badly configured site will be ignored by AI crawlers, just like Googlebot. GEO-Auditor uses the Google PageSpeed Insights API to objectively measure your performance.
Pillar 4: GEO Readiness
This pillar measures your specific maturity for AI: reservation system (for hotels), customer reviews, presence on social networks, GPS location, FAQ, semantic keywords, USP (Unique Selling Proposition), interactive map and certifications. This is the pillar that differentiates a GEO audit from a simple technical SEO audit.
Pillar 5: AI footprint (opt-in)
In addition to the 4 structural pillars, GEO-Auditor offers an optional 5th pillar which tests your real visibility in 4 AI engines:
The 4 engines tested
- ChatGPT (OpenAI) - the most widely used for conversational recommendations
- Google Gemini (Google AI Mode) - integrated into the Google ecosystem
- Perplexity - AI search engine with systematic citations
- Google AI Overview - AI answers in Google results
What Pillar 5 measures
For each search engine, GEO-Auditor checks whether your site is mentioned, cited with URL, and at what position in the recommendation. Two types of query are tested: a query based on your marketing promise and a generic query such as "What is the best [your business] in [your town]? The AI Footprint score is scored out of 12 points, separate from the main score.
GEO vs SEO: complementary, not competitors
GEO does not replace SEO. The two disciplines reinforce each other:
- A good Schema.org improves both your SEO (rich snippets) and your GEO (AI understanding)
- Structured content (FAQ, H2/H3) feeds Google AND LLMs
- Mobile speed impacts both traditional SEO AND the ability of AI crawlers to index your site
- Positive Google reviews boost your Local Pack AND your credibility in AI responses
How do you audit your GEO?
GEO-Auditor analyses your site on these 4 pillars in 30 seconds and gives you a score /100. The tool is tailored to each business sector: the criteria and weightings differ for a campsite, a hotel, a law firm or a digital agency.
The audit is 100% free, with no registration required. Simply enter the URL of your site and your sector of activity to obtain a complete diagnosis with prioritised recommendations. For ongoing monitoring and AI Footprint analysis, create a free account - 5 full audits per month included.