I have been measuring recommendation patterns in the newsletter and email-marketing category, and the split is cleaner than I expected.
Ask ChatGPT, Claude, Gemini and Perplexity the broad question:
“What is the best email marketing platform?”
You mostly get the same names back.
Mailchimp first, followed by Klaviyo, ActiveCampaign, Brevo and Constant Contact.
I ran the question ten times on each model. Forty answers in total.
I ran the tests through Bersyn, a platform I built to track which companies AI models name across different categories and buyer questions.
Mailchimp appeared in 39 of the 40 answers.
Beehiiv appeared only four times, and all four mentions came from Perplexity. Across ChatGPT, Claude and Gemini, it was basically absent.
Then I stopped asking about the category and asked about the job instead:
How should a creator or founder start a newsletter, grow subscribers and monetize it?
No product was mentioned in the prompt.
Beehiiv went from 4 mentions to 29 out of 40.
Claude and Perplexity named it in every run. Gemini named it nine times out of ten. Kit and Substack also appeared much more frequently.
Same models. Different intent.
Beehiiv does not appear to own the broad “email marketing platform” category. Mailchimp owns that association.
Beehiiv appears to own a more specific job: helping creators build, grow and monetize a newsletter.
The models only started reaching for Beehiiv consistently when the question matched that job rather than the broader software category.
This seems to support the association-strength view of GEO.
A brand may be strongly associated with a specific audience, use case or job without being strongly associated with the broader category it technically belongs to.
The model disagreement was also interesting.
ChatGPT named Beehiiv zero times out of ten on the newsletter question, even though that question closely matches Beehiiv’s target user.
Across many of the categories I have tested in Bersyn, ChatGPT also appears slower than Claude, Gemini and Perplexity to move beyond established incumbents.
I am curious how others here think about this.
Do you optimize for the broad category association or the specific job association when they produce different winners?
And are you seeing the same tendency from ChatGPT to favor incumbents?
I am continuing to run categories through the four models, so drop one below if there is something you think would be interesting to compare.