Grok Voice Think Fast 2.0 Tops Agentic Speech Index with Sub-1s Latency
ArtificialAnlys · x · 2026-07-30
According to Artificial Analysis, xAI's Grok Voice Think Fast 2.0 High takes the #1 spot on the Tau Voice benchmark for agentic performance with a score of 56.5%, beating Qwen Audio 3.0 Realtime Plus (54.6%).
Furthermore, the model achieves these intelligence gains with a remarkably low latency trade-off. Its average Time to First Audio (TTFA) on the Big Bench Audio benchmark is just 0.70 seconds, making it the only model in the top 5 of the Speech to Speech Index to clock in under 1 second.
Related event: xAI Releases Grok Voice 2.0, Tops Voice Agent Benchmarks(20 posts)→
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