← Artificial Acceleration
xAI · Grok
Grok 4.20 0309
Released
10 Mar 2026
· 111 days after
Grok 4.1 Fast
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 2026
21 Sep 2026
← previous from xAI
Grok 4.1 Fast
next from xAI →
Grok 4.20 0309 v2