Gemini 3.1 Pro vs Grok 4.20
The comparison
On LM Arena, Gemini 3.1 Pro scores higher (1486 Elo vs 1474 Elo), from a larger review base (60,640 vs 42,370 Arena votes).
As of Jun 24, 2026, Gemini 3.1 Pro is rated 1486 Elo on LM Arena (60,640 Arena votes); Grok 4.20 is rated 1474 Elo on LM Arena (42,370 Arena votes). No source is blended; each stands on its own.
Gemini 3.1 Pro
1486 EloLM Arenahigher
60,640Arena voteslarger base
Grok 4.20
1474 EloLM Arena
42,370Arena votes