Grok Voice Think Fast 2.0 Retains #1 Spot on Artificial Analysis Speech-to-Speech Index

XFreeze · x · 2026-09-04

Grok Voice Think Fast 2.0 continues to hold the #1 position on Artificial Analysis' Speech-to-Speech Index. The author notes that Grok's voice models have topped the leaderboard since the earliest Think Fast releases and have never lost the spot. The index weighs speech reasoning, agentic performance, human preference, and real task success, making Grok Voice arguably the most capable voice model to date.

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