Verdict
GPT-5 leads 7–6 across 13 shared benchmarks.
GPT-5 7 · Kimi K2.6 6 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Unknown: GPT-5 leads 4–1 across 5 shared unknown benchmarks (largest gap: EBR-bench, 12.7 vs 2.38 — single evaluator).
Math: Kimi K2.6 leads 2–0 across 2 shared math benchmarks (largest gap: OTIS Mock AIME 2024-2025, 96.11 vs 91.38 — single evaluator).
Reasoning: Evenly split 1–1 across 2 shared reasoning benchmarks (largest gap: SimpleQA Verified, 50.1 vs 34.9 — protocols undisclosed).
GPT-5 leads 7–6 across 13 shared benchmarks. GPT-5 leads 7 benchmarks and Kimi K2.6 leads 6. Higher isn't always better — see the integrity caveats on each benchmark.
GPT-5 and Kimi K2.6 have 13 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
GPT-5 leads unknown 4–1. Kimi K2.6 leads math 2–0.