Without knowing a little more about your business, an option could be to provide a free trial in the form of a one-off business summary. Then, once someone sees that they get value from it, charge for N uses thereafter.

Alternatively, allow users to generate free summaries but "paywall" the length, allowing them to subscribe to unlock past the "paywall". That way they see a preview and only pay when they have confirmation they like the service you're providing.

I like how https://www.gomoonbeam.com/pricing do it. Free to a word cap with no credit card required, then charge after that point. (They also run on Stripe.)