[two_cents]

I don't have a lot of experience with Golang and AI, I think Rails can give you different kind of productivity.

From what I know (please correct me if I am wrong) most people use AI to create scaffolding and automate all boring and repetitive tasks in a project. So code still needs to be written, you just outsource it to AI helper.

In Rails you write less code and concentrate on business logic because everything boring like DAL, authorization, caching is already written and tested in production.

edit: syntax