# GPT-Live-1

OpenAI, released 2026-07-08

**Verdict: conditional.** GPT-Live-1 is OpenAI's full-duplex voice model: it listens and speaks at the same time and hands reasoning and tool use to a backend model. Since 10 September 2026 it is generally available in the API on the Live endpoint at $0.05 per minute, with backend model and tool usage billed separately. Conditional because its benchmarks are OpenAI's own, language quality is uneven, and real cost per call depends on the backend model you pair it with. Last verified 2026-07-09.

## Pricing

- Input: $0.05 / minute (voice session)
- Output: Included in per-minute session rate
- Context: Live API; backend model + tools billed separately

## Strengths

- Natural, interruptible voice conversations: full-duplex architecture eliminates turn-based rigidity
- Complex Q&A during voice: delegates reasoning and search to a backend model without dropping conversation flow
- Production voice agents via the API: generally available since 10 September 2026 on the Live endpoint (v1/live/sessions) at $0.05 per minute, billed per second, with streaming and function calling
- Hands-free long-form interaction: designed for 30+ minute conversations, commute use, language practice
- Real-time voice translation: English to Hindi, Spanish, and other languages with low latency
- Budgeting on the per-minute rate alone: OpenAI bills backend model and tool usage separately from the $0.05/min voice session, so real cost per call depends on the model doing the reasoning
- Stacks built on Chat Completions, Responses or the Realtime API: gpt-live-1 runs only on the Live endpoint, and structured outputs and fine-tuning are not supported, so it is not a drop-in model swap
- Languages beyond the most popular: non-native accents and fluency gaps reported (e.g., Hindi)

## Benchmarks

- GPQA (scientific reasoning, voice): Substantially outperforms Advanced Voice Mode (https://openai.com/index/introducing-gpt-live/)
- BrowseComp (agentic web search, voice): Strong gains over Advanced Voice Mode (https://openai.com/index/introducing-gpt-live/)
- tau^3-Voice Telecom (voice agent tasks): Outperforms Advanced Voice Mode (https://openai.com/index/introducing-gpt-live/)

## Sources

- [BigGo Finance — GPT-Live-1 detailed feature breakdown](https://finance.biggo.com/news/202607081821_OpenAI_GPT-Live-1_voice_mode_simultaneous_listen_speak_ChatGPT)
- [OpenAI Docs: API changelog (Decisions API beta, October 6, 2026)](https://developers.openai.com/api/docs/changelog)
- [OpenAI API docs: GPT-Live 1 model page](https://developers.openai.com/api/docs/models/gpt-live-1)
- [OpenAI — Introducing GPT-Live](https://openai.com/index/introducing-gpt-live/)
- [OpenAI GPT-Live system card](https://deploymentsafety.openai.com/gpt-live)
- [OpenAI API pricing](https://developers.openai.com/api/docs/pricing)
- [Let's Data Science — OpenAI Upgrades ChatGPT Voice](https://letsdatascience.com/news/openai-upgrades-chatgpt-voice-with-gpt-live-1-0b2cf394)
- [TechCrunch — OpenAI releases new voice models for more natural live conversations](https://techcrunch.com/2026/07/08/openai-releases-new-voice-models-for-more-natural-live-conversations/)
- [SQ Magazine — OpenAI Launches GPT-Live Full-Duplex Voice Models](https://sqmagazine.co.uk/openai-gpt-live/)

Canonical: https://neomanex.com/models/gpt-live-1