Guillaume Bourdon
Founder of Beeleven, a GEO agency in Paris, and creator of Detekia.
Background
Guillaume Bourdon has 15 years of experience in digital marketing, growth and SEO.
He founded Beeleven, a French agency specialized in GEO (Generative Engine Optimization), because brands had no way of knowing what generative AI engines say about them. Beeleven measures what ChatGPT, Gemini, Perplexity and Claude answer on an industry's queries, then helps brands get cited.
He designed Detekia, the free GEO score that evaluates whether a page is ready to be cited by AI engines, with a deterministic and public method. Beeleven runs AI visibility audits for brands in every sector, from SMEs to large groups.
Topics
- GEO and AI search optimization
- AI visibility audits
- Citability and content structure
- Structured data and AI crawler access
- Measuring visibility against competitors
How he writes
Every article on the Detekia blog is signed by Guillaume Bourdon. Every statistic links to its primary source; no figure is attributed to Detekia, which does not publish studies. Articles are updated when a source or a practice changes.
Latest articles
ChatGPT Ads in France: What Changes for Brands
Ads in ChatGPT since August 24, 2026: format, targeting, rules. And why the organic answer still decides how your brand compares with competitors.
Which AI Do the French Use? Arcom's First AI Barometer
ChatGPT captures 76% of time spent on AI in France (Arcom, 2026). What the barometer reveals and what it means for your brand's AI visibility.
Newsletter and Email: Impact on AI Visibility
How newsletters boost your AI visibility: backlinks, brand mentions, E-E-A-T signals and republished content. 7 concrete actions to use email as a GEO lever.
Claude, Gemini, Perplexity: Citation Differences Between AI Engines
ChatGPT, Claude, Gemini and Perplexity don't cite the same sources. Retrieval architectures, selection criteria and engine-specific strategies.
GEO KPIs: What to Measure and How
GEO score, AI citation rate, share of voice, referral traffic: the essential metrics to drive your AI visibility and measure GEO ROI.
Website Redesign and GEO: Don't Lose Your AI Visibility
Redirects, JSON-LD schemas, author pages, robots.txt: the complete checklist to preserve your AI visibility during a website redesign.