Gemini 3.1 Pro vs Grok 4.20
The comparison
On LM Arena, Gemini 3.1 Pro scores higher (1486 Elo vs 1472 Elo), from a larger review base (86,683 vs 61,762 Arena votes).
As of Jul 30, 2026, Gemini 3.1 Pro is rated 1486 Elo on LM Arena (86,683 Arena votes); Grok 4.20 is rated 1472 Elo on LM Arena (61,762 Arena votes). No source is blended; each stands on its own.
Gemini 3.1 Pro
1486 EloLM Arenahigher
86,683Arena voteslarger base
Grok 4.20
1472 EloLM Arena
61,762Arena votes