What’s the relationship, if any, with https://github.com/alexrudall/ruby-openai ?

That gem is actively maintained and widely used. It’s a good gem! But by definition they’re always playing catch up.

Really glad to see official support for Ruby. It’s still my default language—the one I reach for first, and the one I move fastest in. Ruby still reads like a thought to me. Glad to see others recognizing that too.