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Thierry Gustin

GEO audit: what ChatGPT, Perplexity and Google say about your business

The GEO audit measures your visibility in AI engine answers, identifies the sites cited instead of you and hands you a prioritized action plan. It is the starting point of any AI search optimization work.

Who is the GEO audit for?

  • SMEs, freelancers and e-commerce businesses whose customers search online before buying.
  • Companies present in France and Spain, in one or more languages.
  • Marketing teams who want to know where they stand before investing.

What does the audit include?

  • A visibility test on a panel of real questions from your customers, chosen together, in ChatGPT, Perplexity, Gemini, Claude and Google (AI Overviews and AI Mode when they appear), with the sources cited for each answer.
  • The list of competitors and sites cited instead of you, and the likely reasons for their presence.
  • A technical audit with Arachnide SEO Spider: crawling, indexing, HTML rendering without JavaScript, AI bot access, speed, structured data.
  • An analysis of your entity: consistency of your name, activity and contact details across the web, profiles and listings.
  • An analysis of your content: pages that can be cited, pages to rewrite, pages to create.
  • A prioritized action plan based on impact and effort, presented in a video call.

How does the audit work?

  1. Scoping call (30 minutes)

    we choose together the questions to test, your competitors and your priority pages.

  2. Analysis

    tests in AI engines, site crawl, entity and content analysis. The timeline, which depends on the size of the site, is stated in the quote.

  3. Video-call debrief

    I present the report, the priorities and the effort each action requires.

  4. Implementation

    your teams apply the plan, or I handle it as part of an ongoing engagement.

How much does a GEO audit cost?

From €300 excl. VAT for a single-language brochure site. The price depends on the number of pages, the number of languages (French, Spanish, English), the number of questions tested and the number of competitors analyzed. You receive a fixed quote after the scoping call.

Frequently asked questions about the GEO audit

How is it different from a classic SEO audit?
An SEO audit checks that Google can crawl, understand and rank your pages. The GEO audit controls that technical base, then measures what AI engines actually answer about your market, which sources they cite and why they don't cite you.
Which AI engines do you test?
ChatGPT, Perplexity, Gemini, Claude and Google, with its AI Overviews and AI Mode when they appear for your queries. The list evolves with the market.
Don't AI answers change every time?
Yes, they vary. That's why I test each question several times and reason in citation frequency and trends, never on an isolated screenshot.
What happens after the audit?
You keep the report and the action plan. You can implement it in-house or entrust me with a monthly engagement.
Does my data stay confidential?
Yes. I use your access and data only to carry out the audit, and I never publish them without your consent.

Request a GEO audit

Let's start with a 30-minute scoping call to define the questions to test and give you a fixed quote.

Book the scoping call (opens in new tab)Send a message