POST
/realtime/calls/{call_id}/hangupHang up call
End an active Realtime API call, whether it was initiated over SIP or WebRTC.
- RetriesRetries up to 2×, 500ms backoff, 30s timeout.
call_idstringrequired
The identifier for the call. For SIP calls, use the value provided in the
[`realtime.call.incoming`](https://developers.openai.com/api/reference/resources/webhooks#realtime.call.incoming)
webhook. For WebRTC sessions, reuse the call ID returned in the `Location`
header when creating the call with
[`POST /v1/realtime/calls`](https://developers.openai.com/api/reference/resources/realtime/subresources/calls/methods/create).
200Call hangup initiated successfully.