Verdict
Gemini 3.1 Pro leads 9–7 across 16 shared benchmarks.
Gemini 3.1 Pro 9 · GLM-5.2 7 · higher isn't always better — check the caveats below.
Reported scores — protocols may differ. How we compare
Reasoning: Gemini 3.1 Pro leads 3–0 across 3 shared reasoning benchmarks (largest gap: SimpleQA Verified, 77.3 vs 38.1 — single evaluator).
Math: Evenly split 1–1 across 2 shared math benchmarks (largest gap: OTIS Mock AIME 2024-2025, 95.6 vs 86.38 — single evaluator).
Unknown: Evenly split 1–1 across 2 shared unknown benchmarks (largest gap: ProofBench, 35 vs 26 — 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.
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.”
Coding
“Advanced Coding with Flexible Effort: Stronger coding capabilities with multiple thinking effort levels to balance performance and latency”
Context Handling
“We propose IndexShare, which reuses the same indexer across every four sparse attention layers, reducing per-token FLOPs by 2.9x at a 1M context length.”
General
“Pure Open: An MIT open-source license - no regional limits, technical access without borders”
Gemini 3.1 Pro leads 9–7 across 16 shared benchmarks. Gemini 3.1 Pro leads 9 benchmarks and GLM-5.2 leads 7. Higher isn't always better — see the integrity caveats on each benchmark.
Gemini 3.1 Pro and GLM-5.2 have 16 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 3–0.