How to Add Cost-Aware Model Selection to Your AI Agent

How to Add Cost-Aware Model Selection to Your AI Agent Every AI agent picks a model. Most pick the same one every time — usually the most expensive one. That is a fine default when you are prototyping, but in production it means you are overpaying for simple tasks and underpowering complex ones. This tutorial shows how to add dynamic, cost-aware model selection to any AI agent using WhichModel, an open MCP server that tracks pricing and capabilities across 100+ LLM models. The Probl...