The API is free.

https://haveibeenpwned.com/API/v3

Respectfully, in context of my claim (that this is upselling attempt), your answer is untrue.

"You need an active subscription in order to provision an API key".

This is minimum $4.50 pm. Of course it's not a lot but let's not move the goalposts by discussing whether it's a fair price or not.

I don't want to say it's a lie, because I assume you didn't know.

API is a paid service, not free.

Separately, if I open the dashboard link while being logged out, the Web page promises:

"viewing stealer log entries that captured your email address"

Needless to say, this is also false (maybe true with a paid subscription?). If I click on the Stealer Logs in the dashboard it only shows "discord.com" (old account I used with this email was deleted years ago), and nothing else. Even though Breaches suggests there's something else.

This is not "logs" by any stretch of imagination.