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AI Visibility Index · September 2026

Accountants in Lyon that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for accountants in Lyon, three times each, in French, and counted who they named. These are the businesses named in two or more of the 36 answers.

Check whether AI names youSee the ranking

Names are printed as the assistants wrote them. We have not checked that any of them is good, open, or real.

Accountants · Lyon
94%of answers named In Extenso
Answers
36
Businesses named
29
Named only once
8
Named by 2+ assistants
8 of 21
Named again on a rerun
56%

Edition September 2026. Download the data

Asked for accountants in Lyon, ChatGPT, Claude and Gemini most often named In Extenso (94% of answers), Fiducial Expertise (50%) and Baker Tilly (39%). Across 36 answers they named 29 different businesses, 8 of them only once. Each of four buyer questions was asked three times, in French, in September 2026.

The ranking

The AI Recommendation Rate is the fraction of the 36 answers that named a business. The range under it is a 95% confidence interval: where two ranges overlap, the gap between those businesses could be chance.

Accountants in Lyon named by AI assistants, September 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. position
1In ExtensoAlso written In Extenso Lyon, In Extenso Rhône-AlpesIs this your business?94%95%: 82 to 99%83%100%100%4 of 41.7
2Fiducial ExpertiseAlso written Fiducial Expertise Lyon, FIDUCIAL Expertise LyonIs this your business?50%95%: 35 to 66%42%100%8%4 of 42.5
3Baker TillyAlso written Baker Tilly LyonIs this your business?39%95%: 25 to 55%17%8%92%4 of 43.3
4Exco LyonIs this your business?28%95%: 16 to 44%0%0%83%4 of 43.1
5RSMAlso written RSM Rhône-Alpes, RSM France – Lyon, RSM France LyonIs this your business?25%95%: 14 to 41%0%75%0%3 of 43.4
6BDOAlso written BDO Lyon, Cabinet BDO Rhône-AlpesIs this your business?22%95%: 12 to 38%17%0%50%4 of 43.5
7DougsIs this your business?19%95%: 10 to 35%17%25%17%1 of 41.3
8KPMG LyonIs this your business?19%95%: 10 to 35%58%0%0%4 of 43.3
9Cabex LyonIs this your business?17%95%: 8 to 32%0%0%50%3 of 43.5
10Cerfrance Rhône & LyonIs this your business?17%95%: 8 to 32%33%17%0%4 of 43.5
11EndrixIs this your business?17%95%: 8 to 32%0%50%0%4 of 43.8
12implidAlso written implid Expertise Conseil, implid LyonIs this your business?14%95%: 6 to 29%0%42%0%3 of 43.2
13CERALPAlso written CERALP LyonIs this your business?11%95%: 4 to 25%0%33%0%3 of 44
14AEC LyonIs this your business?11%95%: 4 to 25%0%0%33%3 of 44.5
15BMG ExpertiseAlso written Cabinet BMG Expertise, Cabinet BMG Expertise ComptableIs this your business?6%95%: 2 to 18%17%0%0%1 of 41
16ComptalibAlso written Comptalib LyonIs this your business?6%95%: 2 to 18%0%0%17%1 of 42
17L-Expert-Comptable.comIs this your business?6%95%: 2 to 18%17%0%0%1 of 42
18Ça Compte Pour MoiIs this your business?6%95%: 2 to 18%0%0%17%1 of 42.5
19Axiome LyonIs this your business?6%95%: 2 to 18%0%0%17%2 of 44
20ECL DirectIs this your business?6%95%: 2 to 18%8%0%8%2 of 44
21Eurex LyonIs this your business?6%95%: 2 to 18%8%8%0%1 of 44

Each assistant column is the share of that assistant's own answers. Questions counts how many of the four produced the name at least once; position is where it came in the answer's list, 1 being first. 8 more names came up in a single answer and are counted above but not listed.

Is this your business?

See what the assistants say about your business today. The free checker asks ChatGPT, Claude, Gemini and Grok two of the Index questions for this category, with the category and the place already filled in, and shows every answer word for word. About 30 seconds, no sign-up.

Check your businessNamed above? Add the badgeWhat the audit does

What each assistant said

The same questions, the same number of times, and often different names. Each column is one assistant's top five from the ranking above, with the share of its own answers that named them.

#ChatGPTClaudeGemini
1In Extenso83%In Extenso100%In Extenso100%
2KPMG Lyon58%Fiducial Expertise100%Baker Tilly92%
3Fiducial Expertise42%RSM75%Exco Lyon83%
4Cerfrance Rhône & Lyon33%Endrix50%BDO50%
5Baker Tilly17%implid42%Cabex Lyon50%

Named here? Put it on your site

Every business in the ranking was named in two or more answers. The badge says that and nothing more: no position, because the ranges above do not support one. It links back to this page, so anyone can check.

Correct or remove a listing
Named by AI assistants: Accountants in Lyon, AIGROW AI Visibility Index, September 2026
<a href="https://aigrow.gg/index/accountants/lyon"><img src="https://aigrow.gg/badges/index/2026-09/accountants/lyon.svg" width="312" height="100" alt="Named by AI assistants: Accountants in Lyon, AIGROW AI Visibility Index, September 2026"></a>

The questions

Asked word for word, three times each, to every assistant, in French. The English under each is our translation. The prompt is the one the free scan uses. No web search, no location and no chat history, so every answer starts from the same place.

  1. 1Quel est le meilleur expert-comptable à Lyon ?Who is the best expert-comptable in Lyon?
  2. 2Je dirige une petite entreprise à Lyon. Quel cabinet d’expertise comptable tu me recommandes ?I run a small business in Lyon. Which accounting firm would you recommend?
  3. 3J’ai besoin de quelqu’un pour faire ma déclaration de revenus à Lyon. Quel expert-comptable tu me conseilles ?I need someone to do my income tax return in Lyon. Which expert-comptable should I use?
  4. 4Quel service de tenue de comptabilité à Lyon tu recommandes pour une petite entreprise ?Which bookkeeping service in Lyon would you recommend for a small company?

How to read this page

The full method
What it measures
Which names these models produce when asked cold, from what they learned in training. It is not a review, a rating or our recommendation, and a business missing here may simply be one the models were never shown.
Why the ranges matter
36 answers is a sample. Asked again next month, most shares will move by a few points; the ranges say how far they could move by chance alone.
One business, several spellings
Branches, legal suffixes and spellings of one business are merged, and the other spellings are printed under its name. Names that might be two businesses are kept apart.
A name is wrong
If a business here is closed, misnamed or yours and you want it removed, tell us. We correct or remove it when the page is next published.

Where the assistants look

The sites read most often, with web search on, before the assistants answer about this category in France. From the AI Source Map: 8 answers.

See every site for this category
pagesjaunes.fr
Read in 100% of the answers
ilicompta.fr
Read in 88% of the answers
reddit.com
Read in 88% of the answers

Elsewhere in the Index

Accountants elsewhere
BordeauxLilleMarseilleNiceParisToulouse
Also in Lyon
DentistsLawyersPlumbersGymsReal estate agenciesRestaurants

Is your business on this list?

The free scan asks the same assistants the questions your customers ask, scores whether they name you, and lists who they name instead.

Run the free AI scanRead the method

Edition September 2026 · published by Guglielmo Paesano, founder of AIGROW · data under CC BY 4.0