Why Usage-Based Pricing Felt Right for My AI Tool — and How I Pulled It Of
The idea was simple: Let people speak to an AI tutor about any topic, get real-time responses, and build their own companions. But the economics weren’t. Every voice session had a real cost. The API I used (Vapi) abstracted everything—speech-to-text, GPT calls, voice response—into one beautiful endpoint. But behind that endpoint were real tokens, compute,…