Not Every Prompt Needs Your Most Expensive Model – LLM Classifier in PHP (opens in new tab)

When I shipped the Neuron AI official router package a few weeks ago I received the same question from many devs, just worded differently: can it send the hard requests to the strong model and the easy ones to the cheap one? It is the most natural rule to want. It was also the one rule I could not write cleanly, and that bothered me. The router gives you a clean place to make that decision. You register a few providers, you set a rule, and the agent never knows it is talking to a proxy. But t...