Gemini 3.5 Flash (Medium) vs GPT-5.3 Codex (Xhigh)

Gemini 3.5 Flash (Medium) vs GPT-5.3 Codex (Xhigh). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

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 3.5 Flash (Medium)GPT-5.3 Codex (Xhigh)Difference
Intelligence (higher is better)33.632.5−3.3% GPT-5.3 Codex (Xhigh) is 3.3% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)14.90s62.23s+317.7% GPT-5.3 Codex (Xhigh) is 317.7% slower
Price per 1M tokens (in / out)$1.50 / $9.00$1.75 / $14.0
Input modalitiesText, Image, Speech, VideoText, Image
Matchup

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