GPT-Live 1 generally available in the API, at $0.05 per minute for voice sessions

GPT-Live 1 is now generally available in the API. Build full-duplex voice conversations that can continue while a backend model or agent handles reasoning and tools.

Use Responses delegation with an OpenAI model, or client delegation to connect your own backend. Voice sessions cost $0.05 per minute, billed per second; backend model and tool usage is charged separately.

Start with GPT-Live, prompting, and migration guidance. See pricing for details.