← Artificial Acceleration
xAI · Grok

Grok 4.5

Released 8 Jul 2026 · 22 days after Grok Build 0.1 0616
notable release

Musk: "Opus-class", at $2/$6.

Intelligence
—
no index score yet
Price
$3.00
per 1M tokens, 3:1 in/out · $2 in / $6 out
Speed
—
not measured
Weights
Closed
US lab

xAI’s best score over time

12 Aug 202621 Sep 2026
← previous from xAIGrok Build 0.1 0616