voice-ai

1. STT - Deepgram Nova-3 streaming transcription (~150ms)
2. LLM - Groq llama-3.1-8b-instant for fastest inference (~220ms)
3. TTS - Cartesia Sonic for ultra-realistic voice (~90ms)
4. Telephony - Twilio Media Streams for real-time bidirectional audio

CRITICAL: NO OPENAI - Never use from openai import OpenAI

Key deliverables:

• Streaming STT with voice activity detection
• Low-latency LLM responses optimized for voice
• Expressive TTS with emotion controls
• Twilio Media Streams WebSocket handler