Verdict
Gemini 3 Pro leads 8–3 across 11 shared benchmarks.
Gemini 3 Pro 8 · GLM-5.1 3 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Math: Gemini 3 Pro leads 2–1 across 3 shared math benchmarks (largest gap: FrontierMath-Tier-4-2025-07-01-Private, 31.25 vs 20.83 — single evaluator).
Reasoning: Gemini 3 Pro leads 3–0 across 3 shared reasoning benchmarks (largest gap: SimpleQA Verified, 72.9 vs 37.29 — single evaluator).
Vendor claims — compare against the measured scores above. A claim is what a developer says about its own model, not an independent measurement.
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”
No vendor claims on file for GLM-5.1.
Gemini 3 Pro leads 8–3 across 11 shared benchmarks. Gemini 3 Pro leads 8 benchmarks and GLM-5.1 leads 3. Higher isn't always better — see the integrity caveats on each benchmark.
Gemini 3 Pro and GLM-5.1 have 11 benchmarks in common in our data — those are the only rows where a direct, apples-to-apples comparison is drawn.
Gemini 3 Pro leads reasoning 3–0. Gemini 3 Pro leads math 2–1.