Verdict
Gemini 3 Flash leads 4–2 across 6 shared benchmarks.
Gemini 2.5 Pro (Mar 2025) 2 · Gemini 3 Flash 4 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Reasoning: Gemini 2.5 Pro (Mar 2025) leads 2–1 across 3 shared reasoning benchmarks (largest gap: ARC-AGI, 33 vs 21.5 — protocols undisclosed).
Gemini 3 Flash leads 4–2 across 6 shared benchmarks. Gemini 2.5 Pro (Mar 2025) leads 2 benchmarks and Gemini 3 Flash leads 4. Higher isn't always better — see the integrity caveats on each benchmark.
Gemini 2.5 Pro (Mar 2025) and Gemini 3 Flash have 6 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
Gemini 2.5 Pro (Mar 2025) leads reasoning 2–1.