Substack vs Kit (ConvertKit): which one does AI recommend?

We asked ChatGPT, Gemini and Perplexity 10 questions buyers ask about newsletter platform — 59 answers in total — and counted who got named. Substack is named in 37 of 59 answers (63%); Kit (ConvertKit) in 36 (61%).

Substack

63%

named in 37 of 59 answers

Kit (ConvertKit)

61%

named in 36 of 59 answers

How they rank against everyone else

Beehiiv

76%

Substack

63%

Kit (ConvertKit)

61%

MailerLite

56%

Ghost

39%

Brevo

37%

Mailchimp

36%

Buttondown

25%

Where does your product land?

Same 10 questions, your product, about a minute. No account.

Counts are mentions in AI answers, not endorsements, measured 2026-09-08. Nobody pays to appear.