GPT-5.6 Luna (Max) vs Step 3.5 Flash 2603

GPT-5.6 Luna (Max) 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.

OpenAIGPT-5.6 Luna (Max)Off the frontier
Intelligence
37.30
Total cost
$320
StepFunStep 3.5 Flash 2603Not ranked · benchmark data missing
Intelligence
17.00
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-5.6 Luna (Max)Step 3.5 Flash 2603Difference
Intelligence (higher is better)37.317.0−54.4% Step 3.5 Flash 2603 is 54.4% less intelligent
Total AA cost (lower is better)$319.93Not reported— not comparable
End-to-end time (lower is better)103.72s20.05s−80.7% Step 3.5 Flash 2603 is 80.7% faster
Price per 1M tokens (in / out)$0.20 / $1.20$0.10 / $0.30
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.6 Luna (Max): what beats itStep 3.5 Flash 2603: what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-luna/step-3-5-flash · Markdown: /api/v1/compare/gpt-5-6-luna/step-3-5-flash?format=md · llms.txt · agent skill