OperStackOperStack research · October 2026
Who ChatGPT recommends
We ask ChatGPT the questions a buyer asks, such as "what are the best SEO agencies in [city]?", in several cities and more than once, and write down which businesses it names, which it names first and which sources it cites.
- SEO agencies 137 businesses in 60 answers ChatGPT named 137 different SEO agencies across 60 answers in 10 cities. See the SEO agencies lists →
- Marketing agencies 204 businesses in 60 answers ChatGPT named 204 different marketing agencies across 60 answers in 10 cities. See the marketing agencies lists →
- Real estate agents 233 businesses in 60 answers ChatGPT named 233 different real estate agents across 60 answers in 10 cities. See the real estate agents lists →
- Dermatologists 200 businesses in 60 answers ChatGPT named 200 different dermatologists across 60 answers in 10 cities. See the dermatologists lists →
- Dentists 189 businesses in 60 answers ChatGPT named 189 different dentists across 60 answers in 10 cities. See the dentists lists →
- Orthodontists 113 businesses in 60 answers ChatGPT named 113 different orthodontists across 60 answers in 10 cities. See the orthodontists lists →
- Web design agencies 144 businesses in 60 answers ChatGPT named 144 different web design agencies across 60 answers in 10 cities. See the web design agencies lists →
Related research
AI visibility study 2026: how often ChatGPT names a business, by website checks run with OperStack.