Claude Opus 5 vs Kimi K3 Max
The comparison
On LM Arena, Claude Opus 5 scores higher (1494 Elo vs 1487 Elo), from a larger review base (19,353 vs 11,706 Arena votes).
As of Aug 12, 2026, Claude Opus 5 is rated 1494 Elo on LM Arena (19,353 Arena votes); Kimi K3 Max is rated 1487 Elo on LM Arena (11,706 Arena votes). No source is blended; each stands on its own.
Claude Opus 5
1494 EloLM Arenahigher
19,353Arena voteslarger base
Kimi K3 Max
1487 EloLM Arena
11,706Arena votes