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Sector index · Windows and frames

Which brands does AI name for questions about windows and frames?

Suppliers AI names for plastic window frames and insulating glass.

No measured week yet · 8 questions ready · not measured yet

Not measured yet

This sector has not been measured yet

The question set for windows and frames is ready: 8 buying questions and three personas. The index runs part of the sectors each week within a fixed budget; this one is due within 4 weeks. Until then we show no numbers here — a sample leaderboard would suggest a measurement that never happened.

prompt set v1

The 8 questions we ask

  1. 01Wat kosten kunststof kozijnen voor een rijtjeshuis?
  2. 02Welke leverancier van kozijnen is betrouwbaar in Nederland?
  3. 03HR++ of triple glas: wat is verstandig bij een matig geïsoleerd huis?
  4. 04Waar laat ik enkel glas vervangen door isolerend glas?
  5. 05Welke kozijnen zijn het beste tegen geluid van een drukke straat?
  6. 06Welke bedrijven leveren kozijnen met montage en garantie?
  7. 07Kunststof of houten kozijnen: wat gaat langer mee?
  8. 08Waar kan ik kozijnen laten vervangen met subsidie?

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

The personas behind the questions

  • Huiseigenaar die enkel glas wil vervangen door HR++
  • Koper die kiest tussen kunststof en hout
  • Bewoner van een drukke straat die geluidsisolatie zoekt

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

Full method

How this was measured

  • 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.
Full method

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