[webmaven]

Hmm. Holding one category steady and checking the others invariably reveals a combination that hasn't been generated (like in dozens of tries I didn't get one pregenerated result), so you definitely need to figure out how to fund more prompt results.

One thing you could try is to treat this as a straightforward content farm and sell ads or sponsorship on the site. Using Google AdSense won't work since they prohibit machine generated content. You might be able to partner with a small ad network to explore specific slices of the combinatorial explosion (eg. "Pets" or "Food").

There is probably a lot you can do in terms of clever yield management such as cheaply pre-generating just the neologism or descriptive term (like, just four words) and checking to see whether it and/or the original terms reveal good search results and/or are being actively bid on through AdWords before you select which to generate the four full prompts for.

Allow users to upvote/downvote results such that disappointing ones should be shown less often or even regenerated if sufficiently unpopular. Possibly have the vote be on a specific prompt and its result rather than the entire set of four.

GPT has shown facility in determining when a prompt doesn't make sense, experimenting with that to better target your limited generation budget to "good" combinations may help:

https://arr.am/2020/07/25/gpt-3-uncertainty-prompts/