xAI launches Grok Voice 3.0: #1 on Speech-to-Speech Index, sub-second latency
minchoi · x · 2026-10-15
xAI announced Grok Voice 3.0, billed as the world's most intelligent speech-to-speech model, available in the API at the same price as its predecessor. It tops Artificial Analysis's Speech-to-Speech Index at 86.9 (vs 83.2 for GPT-Live-1 and 82.6 for Gemini 3.8 Live), scores 98.5% on Big Bench Audio, 1070 Elo on Speech Agent Arena, and 97% on Full Duplex Bench, with sub-second latency and τ-Voice at 71.6% with 40% lower latency than GPT-Live-1. It powers millions of daily conversations across Tesla and SpaceX. Note: the page is dated Oct 2026, so authenticity is questionable.
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