On November 2, 2026, OpenAI’s developer changelog listed outbound SIP calling for the Live API.
What to know
- What it does: OpenAI says you can connect GPT-Live (
gpt-live-1) to a phone number through your SIP provider, so the model can place calls. - Who can use it: the changelog says outbound SIP calling is “now available to all organizations through the Live API.”
- Where to start: OpenAI links its SIP guide, which has a section on placing an outbound call. We have not tested it, so follow that guide for setup details.
Why it matters
Until now the changelog items we covered focused on voices and tools. Outbound calling means a voice agent can start the conversation, not only answer. That raises the bar for the opening line, consent and handover rules. Tell people they are speaking to an AI where the law or your policy requires it, and check local rules on automated calls.
Our voice agent prompt guide covers greetings, interruptions and fallbacks. For earlier GPT-Live changes, see prompt-to-voice and new voices, and the ChatGPT page.
Source: OpenAI API changelog. We summarise in our own words; check the source for the full details.