OpenAI Launches GPT-Live-1 in the API at $0.05/Minute, Cuts Turn-Taking Latency to 0.8 Seconds

OpenAI opened GPT-Live-1 to developers on Sept 10, a full-duplex voice model that listens and speaks at once, priced at $0.05/minute for the voice layer. Reported metrics: 86.2% task success on Tau3 Voice Intelligence (vs 45.7% predecessor), turn-taking latency of 0.798s vs 1.41s, +30 pts on Full Duplex Bench vs GPT-Realtime-2.1. Delegates deeper reasoning to paired models like GPT-6 Astra, Codex, and ChatGPT Work; Speak reported ~80% fewer false interruptions of learner pauses.