How we built a realtime system for responsive voice AI in six months

GPT-Live is a new voice AI system that eliminates the need for separate turn detectors (models that decide when the AI should respond) by using a full-duplex voice model (one that can listen and speak simultaneously), making conversations feel more natural and responsive. Instead of the older turn-based approach where the AI had to wait for the user to finish speaking before responding, GPT-Live streams audio continuously in and out while handling complex reasoning asynchronously on a separate path. The system was built over six months with a new architecture optimized for low latency (minimal delay), streaming media directly through the model and keeping speech flowing smoothly from end to end.