xAI Launches Grok Voice Agent Builder

:rotating_light: AI Tool Alert - July 3, 2026

xAI Launches Grok Voice Agent Builder

xAI announced a no-code platform for building AI voice agents. Collapses the traditional three-API voice stack (STT+LLM+TTS) into one pipeline.

Key features:

• No-code builder: working agent in <2 min from a plain-language description


• $0.05/min unified pricing — undercuts Bland AI, Vapi, Retell ($0.06–$0.17/min)


• Tool calling during calls: web search, doc search, custom tools


• Free phone number per account


• Call review dashboard with audio + transcripts


• Safety guardrails + full API at docs.x.ai

Why it matters:

• Unified audio-to-audio is where the industry is heading


• Voice agents can now DO things (search web, look up docs, call APIs) during live calls


• $0.05/min will pressure competitors to lower prices

Use case: Deploy a support triage agent for a SaaS company. Upload help docs, set safety rules, test on the free number, go live. $0.05/min vs $25+/hr for humans.

Link: https://x.ai/news/grok-voice-agent-builder