xAI releases Grok Voice 3.0, keeps Voice Agent API pricing unchanged

xAI 发布 Grok Voice 3.0 语音模型

xAI released Grok Voice 3.0, a speech-to-speech model available today through the Voice Agent API with sub-second latency. It ranks first on Artificial Analysis's Speech-to-Speech Index at 86.9 and scores 71.6% on τ-Voice, close to GPT-Live-1 (Astra) but with 40% lower latency.

Why it matters: Grok Voice 3.0 matches GPT-Live-1 on customer-service call tests while cutting latency by 40%.