Gemini 3.1 Pro Preview vs GPT-5.2 (xhigh)

Google · OpenAI · catalog 2026-09-14

Gemini 3.1 Pro Preview beats GPT-5.2 (xhigh): cheaper ($1.74 vs $1.869/M) and at least as smart (index 30.4 vs 30.4).
Gemini 3.1 Pro PreviewGPT-5.2 (xhigh)
Speed (tok/s)109.6 measured64.7 measured
Blended $/M$1.74 derived$1.869 derived
Intelligence index30.4 measured30.4 measured
TTFT (ms)2516 measured7228 measured
Context1049k list400k list
Coding indexnot measured for both
Agentic indexnot measured for both

Gemini 3.1 Pro Preview card · GPT-5.2 (xhigh) card · 3D observatory

Verdicts use price×intelligence dominance only, and only where both sides are measured; null cells stay null with their provenance (em-dash = not in catalog). Percentile-free by design — this page compares two models, not the field. Generated page — do not hand-edit.