Grok Voice 3.0's average Time to First Audio on the Big Bench Audio benchmark is 0.81 seconds, ~40% faster than GPT-Live-1 (Astra, medium) (1.34s) and Gemini 3.8 Live Extended Thinking (High) (1.35s), the next two models in our Speech to Speech Index, and just behind Grok Voice 2.0 at 0.70 seconds. That puts it well ahead of GPT-Live-1 (Sol, low) (1.24s), with Grok Voice 3.0 and Grok Voice 2.0 the only models in the top 5 of our Speech to Speech Index under 1 second.
Grok Voice 3.0 posts 0.81s time to first audio on Big Bench Audio
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Artificial Analysis says Grok Voice 3.0 averages 0.81 seconds to first audio on the Big Bench Audio benchmark.
That is about 40% faster than GPT-Live-1 (Astra, medium) at 1.34 seconds and Gemini 3.8 Live Extended Thinking (High) at 1.35 seconds, the next two models in its Speech to Speech Index.
Only Grok Voice 3.0 and Grok Voice 2.0, which averages 0.70 seconds, score under 1 second among the index's top five.
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Source: Artificial Analysis · x.comPublished · added here