Verdict
Grok 4.6 leads 15–1 across 16 shared benchmarks.
GPT-5 1 · Grok 4.6 15 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Unknown: Grok 4.6 leads 5–0 across 5 shared unknown benchmarks (largest gap: ProofBench, 51 vs 18 — single evaluator).
Reasoning: Grok 4.6 leads 3–1 across 4 shared reasoning benchmarks (largest gap: SimpleBench, 71.08 vs 48.04 — single evaluator).
Math: Grok 4.6 leads 2–0 across 2 shared math benchmarks (largest gap: FrontierMath-Tier-4-v2-Private, 31.71 vs 21.95 — single evaluator).
Grok 4.6 leads 15–1 across 16 shared benchmarks. GPT-5 leads 1 benchmark and Grok 4.6 leads 15. Higher isn't always better — see the integrity caveats on each benchmark.
GPT-5 and Grok 4.6 have 16 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
Grok 4.6 leads unknown 5–0. Grok 4.6 leads reasoning 3–1.