Support and sales ops teams wanting phone agents without building the stack; still in beta, at $0.08 a minute with no platform fee.
Kenning's take
What it does
Voice Agent Builder is a no-code platform from xAI for building phone and voice agents on Grok Voice, launched in beta in July 2026. A business describes how calls should go in plain language, uploads documents, and connects tools such as calendars, ticketing and its own APIs. It includes a free phone number, SIP for existing numbers, voice cloning, call recordings and guardrails.
- Plain-language setup in about two minutes
- Knowledge base from uploaded documents
- Tools for calendars, Linear, Notion, Drive and custom APIs
- Free phone number plus SIP and WebSocket
- Call recordings, transcripts and guardrails
Who it suits. Support and sales operations teams that want production voice agents without building the stack.
Key facts
- Category
- Business tools
- Part of
- Grok
- Made by
- xAI
- Released
- 1 July 2026
- How to get it
- beta, free to try; billed at xAI API rates
- Works on
- Web, API
- Free plan
- free to try; one free phone number per account
- API price
- $0.08 per minute of audio; telephony $0.01 per minute on a provisioned number
FAQ
When did Grok Voice Agent Builder launch?
xAI announced it in beta on 1 July 2026.
How much does Voice Agent Builder cost?
Agents are billed at $0.08 per minute of audio with no platform fee, plus $0.01 per minute for telephony on a free provisioned number.
Do I need to code to use it?
No. Agents are set up with a plain-language description, documents and connected tools.
Facts from the maker's own pages and the sources listed. Checked 2026-10-11.
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