xAI ships Grok Voice 3.0: tops Speech-to-Speech Index at 86.9, sub-1s latency
lmoroney · x · 2026-10-17
xAI released Grok Voice 3.0, the speech-to-speech model behind its Voice Agent API, at the same price as its predecessor. In Artificial Analysis testing it tops the Speech-to-Speech Index at 86.9 (vs GPT-Live-1's 83.2 and Gemini 3.8 Live's 82.6), scores 97% on Full Duplex Bench for natural interruption handling, and hits 98.5% on Big Bench Audio with an Arena Elo of 1070. Its τ-Voice support-call score of 71.6% matches GPT-Live-1 at 40% lower latency, with end-to-end latency under one second and a record customer-support resolution rate. It already powers millions of daily conversations across Tesla and SpaceX.
Related event: xAI Launches Grok Voice 3.0, Tops Voice Model Leaderboard(2 posts)→
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