OpenAI's GPT-Live-1 API enables full-duplex speech apps at 80.1% interactivity, $0.05/min

The Decoder · rss · 2026-09-11

OpenAI has released GPT-Live-1 as a developer API, a full-duplex speech model that lets apps talk and listen at the same time. It scores 80.1% in interactivity tests, up from 45.4% for its predecessor, enabling natural interruption and real-time two-way conversation. At $0.05 per minute, it's not cheap, but marks a big leap for voice app developers.

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