OpenAPI code generator for scala

Anyone can recommend an OpenAPI generator for Scala (2.12)?
I’m using Java-based and it works but I’d rather have all model-classes generated as Scala.

Could smithy work for you?

It generates openAPI specs as one of a bouquet of attractive side effects…

At my previous employer, my recollection is that we used one of the standard Scala generators (of which there are a bunch, for different communications libraries) as the base, which was decent, but slowly evolved a bunch of (proprietary, sadly) customizations to match our idioms, and to be more effect-neutral.