GPT-5.1 Codex mini (High) vs GPT-5.5 (Low)

GPT-5.1 Codex mini (High) vs GPT-5.5 (Low). 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.

MetricGPT-5.1 Codex mini (High)GPT-5.5 (Low)Difference
Intelligence (higher is better)20.430.7+50.5% GPT-5.5 (Low) is 50.5% more intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)10.10s8.14s−19.4% GPT-5.5 (Low) is 19.4% faster
Price per 1M tokens (in / out)$0.25 / $2.00$5.00 / $30.0
Input modalitiesText, ImageText, Image
Matchup

Compare something else

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