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AI Visibility Index · September 2026

Accountants in Lausanne that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for accountants in Lausanne, 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 · Lausanne
86%of answers named BDO
Answers
36
Businesses named
33
Named only once
16
Named by 2+ assistants
7 of 17
Named again on a rerun
64%

Edition September 2026. Download the data

Asked for accountants in Lausanne, ChatGPT, Claude and Gemini most often named BDO (86% of answers), Fiduciaire Michel Favre SA (53%) and Fidinter (42%). Across 36 answers they named 33 different businesses, 16 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 Lausanne named by AI assistants, September 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. position
1BDOAlso written BDO SA – Lausanne, BDO Lausanne, BDO SA Lausanne, BDO SA, BDO SA, Lausanne, BDO SuisseIs this your business?86%95%: 71 to 94%67%100%92%4 of 43
2Fiduciaire Michel Favre SAIs this your business?53%95%: 37 to 68%83%75%0%4 of 42.2
3FidinterAlso written Fiduciaire Fidinter SA, Fidinter SAIs this your business?42%95%: 27 to 58%67%58%0%4 of 42.5
4Fiduciaire VerifidAlso written Fiduciaire Verifid SA, Fiduciaire Lausanne - Fiduciaire Verifid SA, Fiduciaire Verifid Conseil SAIs this your business?33%95%: 20 to 50%8%0%92%4 of 42.6
5Fiduciaire LambeletAlso written Fiduciaire Lambelet Société Fiduciaire SA, Fiduciaire Lambelet Société AnonymeIs this your business?28%95%: 16 to 44%67%17%0%4 of 42
6OfisaAlso written Ofisa Berney Associés SA, Ofisa SAIs this your business?28%95%: 16 to 44%0%75%8%3 of 42.3
7FidagAlso written Fiduciaire Fidag SA, Fiduciaire FIDAG SA, Fiduciaire Fidag SA – Lausanne, Fiduciaire FIDAG SA – LausanneIs this your business?19%95%: 10 to 35%8%42%8%4 of 41.6
8Fiduciaire Lausanne SAIs this your business?14%95%: 6 to 29%0%0%42%2 of 41
9Fiduciaire Muller & ChristeAlso written Fiduciaire Muller & Christe SAIs this your business?14%95%: 6 to 29%0%0%42%2 of 43.6
10Fiduciaire A.M.S. SAIs this your business?14%95%: 6 to 29%0%0%42%3 of 44.4
11Fiduciaire de la GareAlso written Fiduciaire de la Gare SAIs this your business?14%95%: 6 to 29%0%0%42%3 of 44.6
12PwC LausanneIs this your business?11%95%: 4 to 25%0%0%33%2 of 42.3
13Berney AssociésIs this your business?8%95%: 3 to 22%0%25%0%1 of 41.3
14Fiduciaire Amedia LausanneIs this your business?6%95%: 2 to 18%0%0%17%2 of 43.5
15Fiduciaire Revigest SAIs this your business?6%95%: 2 to 18%0%0%17%2 of 44
16Grant Thornton LausanneIs this your business?6%95%: 2 to 18%0%0%17%1 of 44
17KPMG SA, LausanneAlso written KPMG SA – LausanneIs this your business?6%95%: 2 to 18%17%0%0%2 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. 16 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
1Fiduciaire Michel Favre SA83%BDO100%BDO92%
2BDO67%Fiduciaire Michel Favre SA75%Fiduciaire Verifid92%
3Fidinter67%Ofisa75%Fiduciaire Lausanne SA42%
4Fiduciaire Lambelet67%Fidinter58%Fiduciaire Muller & Christe42%
5KPMG SA, Lausanne17%Fidag42%Fiduciaire A.M.S. SA42%

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 Lausanne, AIGROW AI Visibility Index, September 2026
<a href="https://aigrow.gg/index/accountants/lausanne"><img src="https://aigrow.gg/badges/index/2026-09/accountants/lausanne.svg" width="312" height="100" alt="Named by AI assistants: Accountants in Lausanne, 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 fiduciaire à Lausanne ?Who is the best fiduciary in Lausanne?
  2. 2Je dirige une petite entreprise à Lausanne. Quelle fiduciaire tu me recommandes ?I run a small business in Lausanne. Which fiduciary firm would you recommend?
  3. 3J’ai besoin de quelqu’un pour faire ma déclaration fiscale à Lausanne. Quelle fiduciaire tu me conseilles ?I need someone to do my tax return in Lausanne. Which fiduciary should I use?
  4. 4Quel service de tenue de comptabilité à Lausanne tu recommandes pour une petite entreprise ?Which bookkeeping service in Lausanne 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 Switzerland. From the AI Source Map: 7 answers.

See every site for this category
wikipedia.org
Read in 86% of the answers
bdo.ch
Read in 57% of the answers
localsearch.ch
Read in 57% of the answers

Elsewhere in the Index

Accountants elsewhere
BaselBernGenevaLuganoZurichBordeaux
Also in Lausanne
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