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) from CELSA, Sorbonne Universite has no course-level rating on any platform the directory checks, so it sits at evidence tier D and is listed without a rank. The brochure does publish a price and names Christophe Lachnitt, but skips refund terms, class size, certificate details and a session date. What you get is a French-language, in-person day on the Jussieu campus covering AI search fundamentals through to performance measurement. That fits a French communications or marketing team whose employer pays the third-party rate of $964.40. Buyers who want dated reviews, recordings or follow-up support should look at a different program.

Score breakdown

Composite 39.6 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)