# OpenAI's GPT-Live-1 API lets developers build apps that talk and listen at the same time > Source: > Published: 2026-09-10 17:47:35+00:00 # OpenAI's GPT-Live-1 API lets developers build apps that talk and listen at the same time **OpenAI is making GPT-Live-1 available to developers as an API.** The speech model can listen and talk at the same time, [a feature known as "full-duplex,"](https://the-decoder.com/chatgpt-can-now-listen-and-talk-at-the-same-time-making-ai-conversations-seem-more-human/) and is already running inside ChatGPT. Developers can pair it with different backend models depending on the task, matching reasoning depth, speed, and cost to each use case. At $0.05 per minute, it's not cheap. Yelp is using the model for phone-based reservations and reports better call handling, [according to CTO Alex Levy](https://openai.com/index/introducing-gpt-live-1-in-the-api/). On OpenAI's benchmarks, GPT-Live-1 pulls well ahead of its predecessors. In full-duplex interactivity tests, it scores 80.1 percent compared to 45.4 percent for [GPT-Realtime-2.1](https://the-decoder.com/openai-releases-new-models-for-its-realtime-api/). Turn-taking latency drops to 0.8 seconds from 1.4 seconds. Tool-calling accuracy jumps to 87 percent from 60 percent. In a banking voice support benchmark, GPT-Live-1 hits a 32 percent pass rate, up from 12.4 percent for the previous model. GPT-Live-1 also ships with twelve new voices spanning different accents, dialects, and languages. It provides ASR transcripts and response text out of the box. Full details will be available in the [API documentation](https://developers.openai.com/api/docs/live). ``` AI News Without the Hype – Curated by Humans Subscribe to THE DECODER for ad-free reading, a weekly AI newsletter, our exclusive "AI Radar" frontier report six times a year, full archive access, and access to our comment section. Subscribe now ``` [OpenAI](https://openai.com/index/introducing-gpt-live-1-in-the-api/)