How much intelligence do we really need? I have been sitting with this question for a long time. The more I fold language models into my daily work as a software developer, the less sure I am about a very basic thing: which model do I actually need for the task in front of me? Take a concrete case. I want to build a chat app. What is the breakdown of that work that would let me give an honest estimate of the time and the money it will take? That is not an unreasonable thing to ask. Ever...