Verdict
Gemini 3.1 Pro leads 18–1 across 19 shared benchmarks.
Gemini 3.1 Pro 18 · Gemini 3 Pro 1 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Reasoning: Gemini 3.1 Pro leads 5–0 across 5 shared reasoning benchmarks (largest gap: ARC-AGI, 98 vs 75 — single evaluator).
Game Playing: Evenly split 1–1 across 2 shared game playing benchmarks (largest gap: Chess Puzzles, 52.65 vs 27.4 — single evaluator).
Unknown: Gemini 3.1 Pro leads 2–0 across 2 shared unknown benchmarks (largest gap: METR Time Horizons, 77.03 vs 70.98 — protocols undisclosed).
Vendor claims — compare against the measured scores above. A claim is what a developer says about its own model, not an independent measurement.
Agentic / Tool Use
“Gemini 3.1 Pro was evaluated across a range of benchmarks, including reasoning, multimodal capabilities, agentic tool use, multi-lingual performance, and long-context.”
Multimodal
“a suite of highly capable, natively multimodal reasoning models”
Reasoning
“Gemini 3.1 Pro is Google's most advanced model for complex tasks.”
Context Handling
“state-of-the-art reasoning, vision and spatial understanding, leading multilingual performance, and 1 million-token context window”
Multimodal
“It's the best model in the world for multimodal understanding and our most powerful agentic and vibe coding model yet”
Reasoning
“It's state-of-the-art in reasoning, built to grasp depth and nuance”
Gemini 3.1 Pro leads 18–1 across 19 shared benchmarks. Gemini 3.1 Pro leads 18 benchmarks and Gemini 3 Pro leads 1. Higher isn't always better — see the integrity caveats on each benchmark.
Gemini 3.1 Pro and Gemini 3 Pro have 19 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
Gemini 3.1 Pro leads reasoning 5–0. Gemini 3.1 Pro leads unknown 2–0.