# OpenAI launches GPT‑Live‑1 API enabling simultaneous speech and listening

Digest AI · Generative AI & Models · published 2026-09-10T00:00:00Z · updated 2026-09-10T17:47:35Z

Canonical: https://digestai.news/story/openai-launches-gpt-live-1-in-the-api-for-voice-enabled-apps

## Summary

OpenAI has opened its new GPT‑Live‑1 speech model to developers via an API that can both listen and speak at the same time, a capability called full‑duplex. The model, already integrated into ChatGPT, lets developers pair it with different backend engines to balance reasoning depth, speed, and cost for various applications. Priced at $0.05 per minute, the service targets high‑value use cases where real‑time conversational interaction is critical.

Early adopters such as Yelp are using GPT‑Live‑1 for phone‑based reservation calls, reporting smoother handling and higher satisfaction. In OpenAI’s internal benchmarks, the model outperforms its predecessor GPT‑Realtime‑2.1, achieving an 80.1% full‑duplex interactivity score versus 45.4%, cutting turn‑taking latency to 0.8 seconds, and raising tool‑calling accuracy to 87%. A banking voice‑support test shows a 32% pass rate, up from 12.4% previously. The release also adds twelve new voices covering diverse accents, dialects, and languages, and provides automatic speech‑to‑text transcripts alongside response text.

## Key points

- GPT‑Live‑1 offers full‑duplex speech at $0.05 per minute, enabling simultaneous listening and speaking
- Benchmark scores: 80.1% interactivity, 0.8 s latency, 87% tool‑calling accuracy, 32% banking pass rate
- Yelp uses the model for phone reservations, noting improved call handling

## Why it matters

Full‑duplex speech lowers friction in voice‑first applications, opening new possibilities for customer service, banking, and real‑time assistants while pushing the performance envelope of conversational AI.

## Sources

1. [OpenAI's GPT-Live-1 API lets developers build apps that talk and listen at the same time](https://the-decoder.com/openais-gpt-live-1-api-lets-developers-build-apps-that-talk-and-listen-at-the-same-time) (The Decoder, 2026-09-10)
2. [OpenAI’s GPT-Live-1 Arrives in the API at $0.05 Per Minute](https://unite.ai/openais-gpt-live-1-arrives-in-the-api-at-0-05-per-minute) (Unite.AI, 2026-09-10)
3. [Build more natural voice experiences with GPT‐Live‐1 in the API](https://openai.com/index/introducing-gpt-live-1-in-the-api) (OpenAI, 2026-09-10, primary source)

## Cite

Digest AI, "OpenAI launches GPT‑Live‑1 API enabling simultaneous speech and listening", 10 September 2026, https://digestai.news/story/openai-launches-gpt-live-1-in-the-api-for-voice-enabled-apps

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