Verdict
GPT-6.1 Sol leads 10–1 across 13 shared benchmarks.
Gemini 3.8 Flash 1 · GPT-6.1 Sol 10 · 2 tied · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Reasoning: GPT-6.1 Sol leads 1–0 across 3 shared reasoning benchmarks (largest gap: SimpleQA Verified, 73.9 vs 69.7 — protocols undisclosed).
Unknown: GPT-6.1 Sol leads 3–0 across 3 shared unknown benchmarks (largest gap: Furniture Assembly, 71.43 vs 2.38 — protocols undisclosed).
Math: GPT-6.1 Sol leads 2–0 across 2 shared math benchmarks (largest gap: FrontierMath-Tier-4-v2-Private, 100 vs 21.95 — protocols undisclosed).
GPT-6.1 Sol leads 10–1 across 13 shared benchmarks. Gemini 3.8 Flash leads 1 benchmark and GPT-6.1 Sol leads 10, with 2 tied. Higher isn't always better — see the integrity caveats on each benchmark.
Gemini 3.8 Flash and GPT-6.1 Sol have 13 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
GPT-6.1 Sol leads unknown 3–0. GPT-6.1 Sol leads math 2–0.