Gemini 3.1 Pro Preview vs GPT-5 Codex (high)

Gemini 3.1 Pro Preview vs GPT-5 Codex (high). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

GoogleGemini 3.1 Pro PreviewOff the frontier
Intelligence
30.40
Total cost
$1310
OpenAIGPT-5 Codex (high)Not ranked · benchmark data missing
Intelligence
24.90
Total cost
-
Verdict

Comparison incomplete

A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

MetricGemini 3.1 Pro PreviewGPT-5 Codex (high)Difference
Intelligence (higher is better)30.424.9−18.1% GPT-5 Codex (high) is 18.1% less intelligent
Total AA cost (lower is better)$1,310.21Not reported— not comparable
End-to-end time (lower is better)31.47sNot reported— not comparable
Price per 1M tokens (in / out)$2.00 / $12.0$1.25 / $10.0
Input modalitiesNot reportedNot reported
Open this matchup in the interactive pickerGemini 3.1 Pro Preview: what beats itGPT-5 Codex (high): what beats it
Matchup

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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gemini-3-1-pro-preview/gpt-5-codex · Markdown: /api/v1/compare/gemini-3-1-pro-preview/gpt-5-codex?format=md · llms.txt · agent skill