GPT-5.1 Codex mini (High) vs o3-mini (High)

GPT-5.1 Codex mini (High) vs o3-mini (High). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.1 Codex mini (High)Not ranked · benchmark data missing
Intelligence
20.40
Total cost
-
OpenAIo3-mini (High)Not ranked · benchmark data missing
Intelligence
11.00
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.

MetricGPT-5.1 Codex mini (High)o3-mini (High)Difference
Intelligence (higher is better)20.411.0−46.1% o3-mini (High) is 46.1% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)10.10s16.18s+60.2% o3-mini (High) is 60.2% slower
Price per 1M tokens (in / out)$0.25 / $2.00$1.10 / $4.40
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.1 Codex mini (High): what beats ito3-mini (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/gpt-5-1-codex-mini/o3-mini-high · Markdown: /api/v1/compare/gpt-5-1-codex-mini/o3-mini-high?format=md · llms.txt · agent skill