ToolsThe story, in brief
Build more natural voice experiences with GPT‑Live‑1 in the API
OpenAI's GPT-Live-1 brings full-duplex voice to the API—custom voices, telephony, stronger instruction following. Practitioners building voice apps just got a major toolchain upgrade.
The KeyNews take
Why it matters
A new API-tier voice model with full-duplex capability and telephony support expands what developers can build with conversational AI. This shifts voice from a ChatGPT feature into a primitive for production applications—agents, customer service, accessibility tools.
The key facts
6 to knowGPT-Live-1 available in OpenAI API
Full-duplex voice conversations supported
Custom voice capability included
Telephony support enabled
Stronger instruction following vs. prior versions
Published September 10, 2026
Go to the source
OpenAI Blogopenai.com
Publisher excerpt: GPT‑Live‑1 brings natural, full-duplex voice conversations to the API, with stronger instruction following, custom voices, and telephony support.