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xAI Docs

xAI · Docs

xAI Docs

June 27, 2026 at 12:17 AM UTC

xAI Docs release notes (2026-06-27)

Changelog

xAI Docs release notes (2026-06-27)

Voice Agent API

  • New dedicated page: SIP Phone Calls (/developers/model-capabilities/audio/voice-agent/sip) covering SIP integration, call control, DTMF handling, and Bring Your Own SIP Provider setup.
  • Telephony provider examples (Twilio, Telnyx, Plivo) and related DTMF/audit sections moved from the main Voice Agent page to the new SIP page.
  • Main Voice Agent page now links to the SIP page for PSTN, contact-center, and PBX routing details.

REST API Reference – Voice

  • Added documentation for three new endpoints:
    • POST /v2/phone-numbers (create xAI-provisioned or BYO-trunk numbers, with webhook and SIP auth options)
    • POST /v1/realtime/calls/{call_id}/hangup
    • POST /v1/realtime/calls/{call_id}/refer
  • Updated WebSocket connection guidance to include call_id query parameter support for SIP sessions.

Overview

  • Page heading simplified to “Get started”.

No pages were removed.

Older release← Jun 24, 22:17 UTCNewer release→ Jun 28, 16:17 UTC
All xAI Docs releases →