2026 Voice AI Agent & Real-Time Audio Pipeline Unit-Economics Dataset + Cost Simulator CLI (OpenAI Realtime, Deepgram, Cartesia, ElevenLabs)

Verified 2026 per-minute pricing dataset (CSV + JSON) and zero-dependency Node.js CLI gross-margin simulator comparing Deepgram Modular (Nova-3 STT $0.0048/min + Aura-2 TTS $0.024/min + Flash LLM = $0.0328/min), Deepgram Voice Agent API ($0.065/min), Cartesia Line ($0.06/min + $0.014 telephony), OpenAI Realtime Mini ($0.085/min), ElevenLabs Conversational AI ($0.08/min base), and OpenAI Realtime Flagship ($0.16/min). Models monthly call volume, per-minute infrastructure burn, and SaaS gross profit margins.