Gemini 3.5 Flash (High) vs GPT-5 Codex (High)

Gemini 3.5 Flash (High) 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 3.5 Flash (High)Off the frontier
Intelligence
32.60
Total cost
$4222
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 3.5 Flash (High)GPT-5 Codex (High)Difference
Intelligence (higher is better)32.624.9−23.6% GPT-5 Codex (High) is 23.6% less intelligent
Total AA cost (lower is better)$4,222.12Not reported— not comparable
End-to-end time (lower is better)16.52s13.09s−20.8% GPT-5 Codex (High) is 20.8% faster
Price per 1M tokens (in / out)$1.50 / $9.00$1.25 / $10.0
Input modalitiesText, Image, Speech, VideoText, Image
Open this matchup in the interactive pickerGemini 3.5 Flash (High): 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-3-5-flash/gpt-5-codex · Markdown: /api/v1/compare/gemini-3-5-flash/gpt-5-codex?format=md · llms.txt · agent skill