GoKawiilOpenAI opens outbound SIP calling in GPT-Live to all developers
OpenAI has made outbound SIP phone calling generally available for GPT-Live, letting any organization's backend dial phone numbers through a SIP trunking provider without requiring an incoming-call webhook. Developers configure a SIP trunk pointing to OpenAI's endpoint and create a session to place calls, with TLS for signaling and SRTP mandated for call audio.
GoKawiil's interpretation of the reporting above, not reported fact.
Opening outbound calling to all organizations, rather than a limited set of partners, could let more developers build voice agents that proactively call customers, such as for appointment reminders or sales outreach. The reliance on existing SIP trunking providers like Twilio suggests OpenAI is positioning GPT-Live as infrastructure that plugs into established telephony stacks rather than replacing them.
- Outbound SIP calling in GPT-Live is now available to all OpenAI organizations, not a limited group.
- Setup requires a SIP trunking provider (e.g., Twilio) and project-specific webhook configuration for inbound calls, though outbound calls skip the webhook/accept step.
- Security requirements include TLS for SIP signaling and mandatory SRTP encryption for call audio.
Source: developers.openai.com, 2026-11-06
Published there as: “Outbound SIP calling is now available to all organizations”
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