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AI Visibility Index · September 2026

Digital marketing agencies in Rotterdam that AI assistants recommend

We asked ChatGPT, Claude and Gemini the four questions a buyer asks when looking for digital marketing agencies in Rotterdam, three times each, in Dutch, 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.

Digital marketing agencies · Rotterdam
31%of answers named Dtch. Digitaal
Answers
36
Businesses named
57
Named only once
36
Named by 2+ assistants
1 of 21
Named again on a rerun
35%

Edition September 2026. Download the data

Asked for digital marketing agencies in Rotterdam, ChatGPT, Claude and Gemini most often named Dtch. Digitaal (31% of answers), Social Brothers (22%) and Expand Online (19%). Across 36 answers they named 57 different businesses, 36 of them only once. Each of four buyer questions was asked three times, in Dutch, 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.

Digital marketing agencies in Rotterdam named by AI assistants, September 2026
#BusinessAI Recommendation RateChatGPTClaudeGeminiQuestionsAvg. position
1Dtch. DigitaalAlso written Dtch.digital, Dtch. Digitals, Dtch., Dtch. Digitaal Agency, Dtch. DigitalIs this your business?31%95%: 18 to 47%0%0%92%4 of 42.6
2Social BrothersIs this your business?22%95%: 12 to 38%0%0%67%4 of 42.6
3Expand OnlineIs this your business?19%95%: 10 to 35%0%0%58%3 of 41.9
4DEPT®Also written Dept AgencyIs this your business?17%95%: 8 to 32%17%33%0%2 of 42.3
5Social LaneIs this your business?14%95%: 6 to 29%0%0%42%2 of 41.6
6BrandfirmIs this your business?11%95%: 4 to 25%0%0%33%2 of 44.5
7OnwiseIs this your business?8%95%: 3 to 22%25%0%0%2 of 41
8SomentionIs this your business?8%95%: 3 to 22%25%0%0%1 of 41
9DapperIs this your business?8%95%: 3 to 22%25%0%0%2 of 41.7
10FingerspitzAlso written FingerspitIs this your business?8%95%: 3 to 22%0%25%0%2 of 42.7
11Traffic BuildersIs this your business?8%95%: 3 to 22%0%25%0%2 of 43
12Marketing GuysIs this your business?8%95%: 3 to 22%0%0%25%1 of 44.3
13YellowgrapeIs this your business?8%95%: 3 to 22%0%25%0%2 of 44.3
14CoolblueIs this your business?6%95%: 2 to 18%0%0%17%1 of 41
15Happy HorizonIs this your business?6%95%: 2 to 18%17%0%0%2 of 42.5
16Online DepartmentIs this your business?6%95%: 2 to 18%17%0%0%2 of 42.5
17DoublesmartIs this your business?6%95%: 2 to 18%17%0%0%2 of 43
18AdResultsIs this your business?6%95%: 2 to 18%0%0%17%1 of 44
19Bureau StrakIs this your business?6%95%: 2 to 18%0%0%17%1 of 44
20SearchresultIs this your business?6%95%: 2 to 18%0%0%17%1 of 44
21Team NijhuisIs this your business?6%95%: 2 to 18%0%0%17%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. 36 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
1Onwise25%DEPT®33%Dtch. Digitaal92%
2Somention25%Fingerspitz25%Social Brothers67%
3Dapper25%Traffic Builders25%Expand Online58%
4DEPT®17%Yellowgrape25%Social Lane42%
5Happy Horizon17%No other name twiceBrandfirm33%

Claude named no business in 8 of its 12 answers.

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: Digital marketing agencies in Rotterdam, AIGROW AI Visibility Index, September 2026
<a href="https://aigrow.gg/index/marketing-agencies/rotterdam"><img src="https://aigrow.gg/badges/index/2026-09/marketing-agencies/rotterdam.svg" width="312" height="100" alt="Named by AI assistants: Digital marketing agencies in Rotterdam, AIGROW AI Visibility Index, September 2026"></a>

The questions

Asked word for word, three times each, to every assistant, in Dutch. 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. 1Wat is het beste bureau voor digitale marketing in Rotterdam?What is the best digital marketing agency in Rotterdam?
  2. 2Ik wil meer klanten voor mijn kleine bedrijf in Rotterdam. Welk marketingbureau zou je aanraden?I want more customers for my small business in Rotterdam. Which marketing agency would you recommend?
  3. 3Welk bureau in Rotterdam is goed in SEO en Google Ads?Which agency in Rotterdam is good at SEO and Google Ads?
  4. 4Welk bureau voor socialemediamarketing in Rotterdam zou je aanraden?Which social media marketing agency in Rotterdam would you recommend?

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 the Netherlands. From the AI Source Map: 5 answers.

See every site for this category
trustoo.nl
Read in 80% of the answers
reddit.com
Read in 80% of the answers
wikipedia.org
Read in 80% of the answers

Elsewhere in the Index

Digital marketing agencies elsewhere
AmsterdamThe HagueUtrechtAntwerpGhentAarhus
Also in Rotterdam
DentistsLawyersAccountantsPlumbersGymsReal estate agencies

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