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GPT-Live-1

2 mentions in 7 days · 2 in 30 days · 2 total · first seen Sep 10, 2026 · last 5d ago

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OpenAI's GPT-Live-1 API lets developers build apps that talk and listen at the same time

OpenAI's GPT-Live-1 API enables full-duplex speech apps, outperforming GPT-Realtime-2.1 with 0.8s turn-taking latency at $0.05 per minute.

OpenAI released GPT-Live-1 as a developer API for full-duplex speech, allowing applications to listen and talk simultaneously; it already powers ChatGPT voice. Benchmarks show 80.1% on full-duplex interactivity versus 45.4% for GPT-Realtime-2.1, turn-taking latency of 0.8 seconds versus 1.4 seconds, tool-calling accuracy of 87% versus 60%, and a 32% pass rate on a banking voice-support benchmark versus 12.4%. The model costs $0.05 per minute, ships twelve new voices, provides ASR transcripts and response text, and is already in production at Yelp for phone-based reservations.

The Decoderupdated Sep 12, 13:10 UTC · 3d agofirst Sep 10, 17:47 UTC · 5d agoModel release 10 sources1

Build more natural voice experiences with GPT‑Live‑1 in the API

OpenAI releases GPT-Live-1 in the API, a full-duplex voice model that handles interruptions natively and delegates reasoning to backend models.

OpenAI launched GPT-Live-1 in the API, a single-model full-duplex voice system that listens and speaks simultaneously, replacing chained STT-LLM-TTS architectures. It improves Full Duplex Bench performance by 30 percentage points over GPT-Realtime-2.1 and ranks #1 on Tau3 when paired with GPT-6 Astra at medium reasoning effort. Early partner Speak reported nearly 80% fewer interruptions in language tutoring. The API release costs $0.05 per minute for the front-end voice layer and supports telephony, native ASR transcripts, keyword biasing, and expanded voice and language options.

OpenAI Newsupdated Sep 12, 13:10 UTC · 3d agofirst Sep 10, 00:00 UTC · 6d agoModel release 10 sources1

Appears with

ai model GPT-Live-1 2 ai model GPT-Realtime-2.1 2 vendor OpenAI 2 product ChatGPT 2 organization Yelp 1 product Codex 1 product GPT-Realtime-2.1 1 ai model GPT-6 Astra 1 vendor Speak 1 ai model Luna 1 ai model Terra 1 organization OpenAI 1

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