How to Monetize Your AI Agents with LangChain and Kong

Say you built an AI agent and customers are starting to pay for it. Sooner or later you'll want to charge them by what they actually use, because some customers hammer the agent all day while others send a handful of messages a week. A single flat fee loses money on the heavy users and overcharges the light ones. The billing problem is the same whether your agent runs on your own model (self-hosted, fine-tuned, or trained from scratch) or calls a third-party API like OpenAI , Anthropic , or Gemi