Which brands does AI name for questions about gyms?

1. 01“Welke sportschool is het goedkoopst met een landelijk abonnement?”
2. 02“Welke fitnessketen heeft de beste groepslessen?”
3. 03“Welke sportscholen zijn 24 uur per dag open?”
4. 04“Welke sportschool is goed voor beginners?”
5. 05“Welke fitnessketens hebben zwembad en sauna?”
6. 06“Welke sportschool heeft een flexibel maandelijks opzegbaar abonnement?”
7. 07“Welke sportscholen bieden personal training aan?”
8. 08“Welke fitnessketen heeft de meeste vestigingen in Nederland?”

Without a brand name, in Dutch, with the Netherlands as market. The same set every week.

The personas behind the questions

• Beginner die maandelijks opzegbaar wil sporten
• Ervaren sporter die let op apparatuur en openingstijden
• Ouder die groepslessen en kinderopvang combineert

Personas and questions are in Dutch: the index measures the Dutch market.

• 01Every question goes to the engines through their API in a clean session: no account, no history, no personalisation.
• 02Brand names are extracted from each answer (text extraction). Per brand the decision layer judges whether it is a real brand in this sector, whether it is a marketplace, how it is spoken about and how prominently it appears. That certainty is shown in the table.
• 03Brands only count when the probability that they are a real brand is at least 50%. Borderline cases are left out.
• 04Share is measured over a four-week window with a 95% confidence interval. Names that turn out to be the same company are merged once the decision layer confirms it.
• 05Engines without a usable API (such as Google AI Overviews) are not in this index. Browser captures of consumer products follow once the capture service is publicly available; those will be labelled separately.