ToolsThe story, in brief
OpenAI's GPT-Live-1 API lets developers build apps that talk and listen at the same time
Full-duplex speech just got 76% better. OpenAI's GPT-Live-1 API is now available to developers at $0.05/min.
The KeyNews take
Why it matters
OpenAI ships a production speech API with genuine interactivity gains (80.1% vs 45.4% prior), enabling real-time voice agents and conversational apps. Practitioners need to evaluate cost-performance tradeoffs for voice-first deployments.
The key facts
5 to knowGPT-Live-1 released as developer API
Full-duplex speech capability (talk and listen simultaneously)
80.1% interactivity score vs 45.4% predecessor
Pricing: $0.05 per minute
Published September 10, 2026
Go to the source
The Decoderthe-decoder.com
Publisher excerpt: OpenAI releases GPT-Live-1 as a developer API. The full-duplex speech model scores 80.1 percent in interactivity tests, up from 45.4 percent for its predecessor. At $0.05 per minute, it's not cheap.