Formation Generative Engine Optimization (GEO)

Verdict

By Editorial team. Opinion within the published method; every figure is from the record below.

Formation Generative Engine Optimization (GEO) is a one-day, French-language continuing-education course from CELSA, Sorbonne Universite, taught in person at Campus Jussieu by Christophe Lachnitt. Public evidence is thin: evidence tier D, no ratings anywhere, no testimonials, no published refund terms or certificate. The directory lists it but does not rank it, because confidence is low. Sources also disagree on length: the launch announcement said two days, the brochure says 7 hours, a third-party listing says one day. It fits French-speaking marketers who want a classroom day on GEO and can get an employer to pay $964.40. Skip it if you want proof before you book.

Score breakdown

Composite 39.4 of 100, rubric v1, evidence tier D, low confidence (31 of 67 attributes confirmed, checked 18 Sep 2026). The score measures public evidence about a program (what is published, what learners say, how current it is), not teaching quality.

AI SEO course scoring methodology: weights, evidence ladder, confidence rule and what was checked and not found for every program. Every price in context: AI SEO course cost.

Weight redistribution (evidence ladder): satisfaction (22%) to volume, recency, transparency, completeness; sentiment (20%) to volume, recency, transparency, completeness.

Facts

Each value carries its data label (provider-stated, observed, calculated), the date it was checked and its source. Unverified means the value could not be confirmed on a public page by the check date.

Formation Generative Engine Optimization (GEO) price and price history

Current price $964 (EUR 840) one-off (checked 18 September 2026). One dated observation on record, so no trend is shown. €840 net for third-party payers; €588 net for individuals.

Formation Generative Engine Optimization (GEO) refund policy

No refund policy was found on a public page ().

What Formation Generative Engine Optimization (GEO) teaches

4 of 13 tracked curriculum flags are confirmed on public pages, 1 confirmed absent and 8 unverified (checked 18 September 2026). A confirmed flag means the provider's own curriculum or listing names the topic; the source is cited, the wording is not reproduced.

Reception

Ratings by platform

No course-level rating was found (checked 18 September 2026). Platforms checked: official site, educatly, Trustpilot, G2, Reddit, YouTube. A missing rating is never scored as zero; see the score breakdown for how the weight moved.

What public discussion says

No independent public discussion or attributed review found (checked 2026-09-18)

Cautions

Sourced facts from the caution checks (price consistency, page history, instructor identity, testimonial dating, self-ranking, certificate claims). Neutral by design: each line is what a public page shows, with its date.

1. The seller publishes €840 net for third-party payers and €588 net for individuals. Check 1, seen 18 Sep 2026 [3]
2. The May announcement says 2 days; the current brochure at https://fc.sorbonne-universite.fr/pdf/fiche/?ID=105102 says 7 hours and the current third-party listing at https://www.educatly.com/program/812561/generative-engine-optimization-geo says 1 day. Check 2, seen 18 Sep 2026 [1]
3. Christophe Lachnitt is named on the public program listing at https://www.educatly.com/program/812561/generative-engine-optimization-geo and has a public Sorbonne teacher profile. Check 3, seen 18 Sep 2026 [2]
4. The current brochure says dates are to be seen in the calendar; no session date is visible in the brochure. Check 4, seen 18 Sep 2026 [3]
5. No testimonials are visible in the official announcement or the two-page brochure at https://fc.sorbonne-universite.fr/pdf/fiche/?ID=105102. Check 5, seen 18 Sep 2026 [1]
6. The current brochure does not name a certificate or an accrediting body. Check 7, seen 18 Sep 2026 [3]

Compared with

Formation Generative Engine Optimization (GEO) alternatives

Programs in the same format band that cost less, in composite order (checked 18 Sep 2026):

• Formation GEO: SEO pour l'IA: $279 (CAD 390) one-off, composite 56.1, low confidence (18 Sep 2026)