Verdict
Grok 4.6 leads 8–6 across 14 shared benchmarks.
Grok 4.6 8 · Kimi K3 6 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Reasoning: Grok 4.6 leads 2–1 across 3 shared reasoning benchmarks (largest gap: SimpleQA Verified, 54.4 vs 42.7 — single evaluator).
Coding: Evenly split 1–1 across 2 shared coding benchmarks (largest gap: FrontierCode, 48.01 vs 44.2 — single evaluator).
Math: Evenly split 1–1 across 2 shared math benchmarks (largest gap: FrontierMath-Tier-4-v2-Private, 39.02 vs 31.71 — single evaluator).
Unknown: Evenly split 1–1 across 2 shared unknown benchmarks (largest gap: ProofBench, 87 vs 51 — single evaluator).
Grok 4.6 leads 8–6 across 14 shared benchmarks. Grok 4.6 leads 8 benchmarks and Kimi K3 leads 6. Higher isn't always better — see the integrity caveats on each benchmark.
Grok 4.6 and Kimi K3 have 14 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
Grok 4.6 leads reasoning 2–1.