Grok Becomes Vapi's Default Voice Engine

Grok 成为 Vapi 的默认语音引擎

xAI partnered with Vapi to make Grok the default engine for 12 core voices, covering more than 2.5 million voice agents, and Grok Voice ranked first in Vapi’s independent blind test.

Why it matters: HKR-H/K/R all pass: the default-engine switch has scale, numbers, and voice-agent market resonance. Single-source partnership news lacks test methodology, pricing, and migration data, so it stays in the mid product-update band.