Cost per minute and pricing your service

Build a cost sheet per minute: telephony (inbound/outbound rates), STT, LLM (tokens per minute), TTS (characters per minute), LiveKit/hosting, recording storage, plus your margin. Compare with platform prices (Vapi/Retell per minute) at 1,000, 10,000 and 100,000 minutes per month to know when your own platform pays off. Then choose a pricing model (per minute, per successful outcome, monthly plan).