DeepSeek V4 Pro vs Grok 4.20
The comparison
On LM Arena, Grok 4.20 scores higher (1472 Elo vs 1458 Elo), from a larger review base (61,762 vs 26,928 Arena votes).
As of Jun 25, 2026, DeepSeek V4 Pro is rated 1458 Elo on LM Arena (26,928 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.
DeepSeek V4 Pro
1458 EloLM Arena
26,928Arena votes
Grok 4.20
1472 EloLM Arenahigher
61,762Arena voteslarger base