LLM routing per tier via OpenRouter — when one model doesn't fit all

📦 Full runnable example: github.com/sm1ck/honeychat/tree/main/tutorial/02-routing — docker compose up exposes POST /complete on localhost:8000. Every snippet below is pulled from that repo. Most introductory "chat with AI" tutorials pick one model and call it a day. That works in a toy. It stops being enough in production, where users have different price sensitivity, different conversation styles, and different expectations for what the product should allow. Here's how to route LLM calls acros