GPT-5.1 Codex mini (High) vs Step 3.5 Flash 2603

GPT-5.1 Codex mini (High) vs Step 3.5 Flash 2603. 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)Step 3.5 Flash 2603Difference
Intelligence (higher is better)20.417.0−16.7% Step 3.5 Flash 2603 is 16.7% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)10.26s20.55s+100.3% Step 3.5 Flash 2603 is 100.3% slower
Price per 1M tokens (in / out)$0.25 / $2.00$0.10 / $0.30
Input modalitiesText, ImageText
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/step-3-5-flash · Markdown: /api/v1/compare/gpt-5-1-codex-mini/step-3-5-flash?format=md · llms.txt · agent skill