My AI Sends 30k Tokens Per Message. 80% of Them Were Wasted.

Building AI solutions is fun until you have to pay for them. I built Synapse, an AI companion with deep memory powered by a knowledge graph. My wife uses it daily for therapy, coaching, and reflection. The AI knows her life, her patterns, her goals, her emotional triggers. It remembers things across weeks and months. Two weeks ago, I connected PostHog to track LLM costs. Here is what I saw: 24 in two weeks. Four users. One of her sessions hit $2.42 for 28 messages. A single conversation. I...