Let me be brutally honest with you. I've seen teams demo AI agents that look incredible — smooth responses, beautiful UI, stakeholders impressed. Then that same team ships to production and spends the next three weeks firefighting hallucinations they could have caught in testing. The problem isn't the AI. The problem is nobody evaluated it properly. Not because they didn't want to. Because the existing tools made it painful. You're building with LangGraph on Monday. LlamaIndex RAG pipeline on We