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

GPT-5.1 Codex mini (High) vs Step 3.5 Flash. 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
-
StepFunStep 3.5 FlashNot ranked · benchmark data missing
Intelligence
16.60
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)Step 3.5 FlashDifference
Intelligence (higher is better)20.416.6−18.6% Step 3.5 Flash is 18.6% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)10.26s20.68s+101.6% Step 3.5 Flash is 101.6% slower
Price per 1M tokens (in / out)$0.25 / $2.00$0.10 / $0.30
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.1 Codex mini (High): what beats itStep 3.5 Flash: what beats it
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-0202 · Markdown: /api/v1/compare/gpt-5-1-codex-mini/step-3-5-flash-0202?format=md · llms.txt · agent skill