Voice agents get built three ways: cascaded (STT, LLM, TTS), turn-based speech-to-speech, and full-duplex, where the model listens and talks at the same time.
All three now run on LiveKit Inference: GPT-Live and GPT Realtime from
@OpenAI,
@grok Voice Think Fast from
@xai, and Gemini Live from
@GoogleDeepMind. One LiveKit Cloud key, one bill.