Gemini 3.5 Flash (Medium) vs GPT-5.1 Codex (High)

Gemini 3.5 Flash (Medium) vs GPT-5.1 Codex (High). 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-5.1 Codex (High)Difference
Intelligence (higher is better)33.623.7−29.5% GPT-5.1 Codex (High) is 29.5% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)14.90s12.01s−19.4% GPT-5.1 Codex (High) is 19.4% faster
Price per 1M tokens (in / out)$1.50 / $9.00$1.25 / $10.0
Input modalitiesText, Image, Speech, VideoText, Image
Matchup

Compare something else

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