Jack Campin wrote: There is a story by Lem where someone creates an AI poet ...

I remember - it was called 'Trurl’s Electronic Bard'.

I was introduced to Lem by someone's sig on usenet, which read
"The whole plan hinged upon the natural curiosity of potatoes." — Stanisław Lem

I was thinking only yesterday, when somebody asked about Mudcat Search again, that ChatGPT could answer some of the questions here.