OpenAI makes GPT-Live 1 generally available
GPT-Live 1 is generally available for full-duplex voice sessions that continue while a backend model or agent handles reasoning and tools. Voice costs $0.05 per minute, billed per second; model and tool use is charged separately.
Models: gpt-live-1
Source: OpenAI API changelog, checked Sep 28, 2026. Summarized from the provider’s announcement.