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xAI · Grok
Grok 4.20 0309 v2
Released
7 Apr 2026
· 28 days after
Grok 4.20 0309
Intelligence
—
no index score yet
Price
$1.56
per 1M tokens, 3:1 in/out · $1.25 in / $2.5 out
Speed
—
not measured
Weights
Closed
US lab
xAI’s best score over time
12 Aug 2026
21 Sep 2026
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Grok 4.20 0309
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Grok 4.3