I'm glad you asked (to be honest that was half the reason I posted the comment)
I use Clai[1] which I've written myself, so it fits my workflow the best. But I know llm [2] is a popular choice as well.
With both of these it's possible to have a 'vendor agnostic' version of both claude code and gemini CLI. Better yet: it's possible to very easily swap to the latest and greatest vendor by simply specifying their latest fancy new model.
