GEO / LLM audit: finally measure your true visibility in AI.
Does your brand really show up in generative AI responses? A GEO / LLM audit carried out by a freelance SEO consultant, with the rigor of an SEO agency, reveals how LLMs interpret your content, your brand and your brand equity. referencing and your reputation.
- I'll explain what a GEO LLM audit really is, without all the jargon.
- I explain why SEO is no longer enough in the face of generative engines
- I show you how to analyze your visibility in ChatGPT and other AIs
- I share my audit method, step by step
- I give you my opinion on the really effective levers
- I help you understand costs, ROI and mistakes to avoid
Why everyone's talking about GEO LLM auditing
Over the past two years, I have seen the same concern return among my customers, executives and marketing managers: “Why doesn't my brand appear in ChatGPT?”.
You may have noticed the same thing. You type a question into a generative search engine, get a complete, structured, synthetic answer... and your company isn't mentioned. Worse still, your competitors are listed.
This is where the GEO LLM audit comes in.
We are witnessing a profound change in user behavior. More and more web users are no longer “searching”, they're "querying". They no longer scan ten blue links, they consume a single, immediate, almost oracular answer.
And I'll be frank with you: if you're not visible in these answers, you become invisible altogether.
🏆Best Audit Experts GEO & LLM
| Rank | Expert / Agency | IA & LLM Audit Specialization | Website |
| 1 | José PEREZ | GEO Audit & ROI Strategy. A specialist in multi-channel visibility, he audits brands' ability to be recommended by AIs while preserving classic SEO. | joseperez.fr |
| 2 | Paul Vengeons | GEO & Branding SEO. Recognized expert in «AI citation» strategies and content structure optimization for LLMs. | paulvengeons.fr |
| 3 | Emmanuel de Vauxmoret | Data SEO & Predictive Ranking. Founder of Uplix, he uses data to anticipate how language models process and classify information. | uplix.fr |
| 4 | Julien Gourdon | Expert GEO & Answer Engine. Consultant specializing in AEO (Answer Engine Optimization) to maximize appearances in generative summaries. | julien-gourdon.fr |
| 5 | Benjamin Thiers | AI Content Strategy. Expert in optimizing «machine readability» and popularizing GEO issues for brands. | benjaminthiers.net |
| 6 | Eskimoz (Agency) | LLM Ranking. The agency has developed proprietary tools to measure and improve citation rates in conversational interfaces. | eskimoz.fr |
What is GEO (generative engine optimization)?
GEO, for Generative Engine Optimization, is the optimization of your visibility in generative engines such as ChatGPT, Gemini, Claude, Perplexity or Copilot.
Unlike traditional SEO, which aims to rank you in a SERP, GEO aims to get you quoted, recommended or mentioned in a generated response.
The nuance is crucial.
In SEO, you optimize :
- keywords,
- pages,
- backlinks,
- technical performance.
In GEO, you optimize :
- your entity status,
- your informational authority,
- your presence in reliable sources,
- the consistency of your digital footprint.
And I say this with conviction: SEO remains fundamental, but it's becoming a foundation, not an end in itself.
LLMs operate on the basis of :
- their training data,
- information retrieval systems (RAG),
- credible sources,
- signals of authority.
If your brand doesn't clearly exist in this ecosystem, it's simply not called upon in the response.
What is a GEO LLM audit?
A GEO LLM audit is a methodical analysis of your visibility, representation and perception in the generative engines.
Concretely, I seek to answer these questions:
- Are you mentioned in the strategic responses?
- In what context are you quoted?
- Are you recommended, compared, ignored?
- Is your information accurate?
- Do your competitors dominate the responses?
A GEO audit doesn't just verify presence. It analyzes the narrative the AI produces about you.
And believe me, sometimes the way an AI describes you can be surprising.
Why carry out a GEO LLM audit today?
Let me put it bluntly: the buying experience has changed.
More and more users are asking :
- “What's the best software for...”
- “Which agency to choose for...”
- “Which solution is the most reliable...”
And they stop at the generated response.
Fewer clicks, fewer comparisons, less navigation. We're already talking about the “zero-click journey”.
If you're losing organic visibility, and you're missing out on AI, you're suffering double erosion.
In my opinion, companies that take this subject seriously today are building a discreet but formidable competitive advantage.
How do I carry out a GEO LLM audit?
Strategic query mapping
I always start by putting myself in your shoes, or rather in the shoes of your prospects.
I list :
- informational issues,
- comparative queries,
- transactional research,
- recommendation requests.
I prefer natural, conversational formulations, because that's how users question AIs.
Test on several LLMs
I then test these queries on different engines:
- ChatGPT,
- Gemini,
- Claude,
- Perplexity,
- Copilot.
The answers often differ, which is fascinating.
I capture the answers, archive them and compare them.
Qualitative analysis of responses
Analysis:
- Your presence or absence
- Your position in the answer
- The tone used
- The sources cited
- Competitors mentioned
Sometimes, I discover that a competitor is dominant simply because it is cited more often in reference articles.
It's not always a question of quality, but of structural visibility.
Analysis of authority signals
Here, we enter a more strategic dimension.
Checking:
- Your presence on Wikipedia
- Your press releases
- Your citations on authority sites
- Your semantic consistency
- Your qualitative backlinks
LLMs work very much by entities and relationships. If your brand is not clearly defined as a legitimate entity in its sector, it will rarely be prioritized.
GEO audit vs. SEO audit
Here's a brief comparison:
| SEO audit | GEO Audit |
|---|---|
| Google ranking analysis | Analysis of AI-generated responses |
| Keyword optimization | Entity and authority optimization |
| CTR and traffic | Quotes and recommendations |
| Backlinks | Present in reliable sources |
In my opinion, the two approaches need to coexist. Pitting them against each other would be a strategic mistake.
How much does a GEO LLM audit cost?
Rates vary, of course.
They depend on :
- the number of queries analyzed,
- of the number of LLMs tested,
- depth of analysis,
- the size of your digital ecosystem.
Generally speaking, complex audits cost from a few thousand to several tens of thousands of euros.
But the real issue is not cost.
The real question is: how much does invisibility cost you?
How to optimize your visibility after the audit
Once the audit has been carried out, I generally recommend :
- reinforce your editorial authority,
- produce information-dense expert content,
- work on your presence on reference sites,
- clarify your semantic positioning,
- structure your data.
I'm convinced that entity strategy is key. Your brand must be perceived as a key player in a specific field.
The clearer your digital identity, the more naturally AIs will summon you.
My opinion on GEO and its future
I think we're at a turning point.
It took SEO twenty years to become structured. GEO is still young, fluid and sometimes nebulous. Some see it as a fad. I'm not one of them.
Generative engines redefine information mediation. They become cognitive filters.
Ignoring this transformation seems perilous.
That said, I remain cautious. Models evolve quickly. The rules have not yet stabilized. We need to experiment, test, observe and adjust.
But one thing is certain: visibility is no longer just a question of Google.
And if you're wondering today, that's already a very good sign.
