Claude Sonnet 5 (Low) vs Step 3.5 Flash 2603

Claude Sonnet 5 (Low) 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.

AnthropicClaude Sonnet 5 (Low)Off the frontier
Intelligence
24.30
Total cost
$653
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.

MetricClaude Sonnet 5 (Low)Step 3.5 Flash 2603Difference
Intelligence (higher is better)24.317.0−30.0% Step 3.5 Flash 2603 is 30.0% less intelligent
Total AA cost (lower is better)$652.70Not reported— not comparable
End-to-end time (lower is better)8.29s20.55s+147.9% Step 3.5 Flash 2603 is 147.9% slower
Price per 1M tokens (in / out)$2.00 / $10.0$0.10 / $0.30
Input modalitiesText, ImageText
Open this matchup in the interactive pickerClaude Sonnet 5 (Low): what beats itStep 3.5 Flash 2603: what beats it
Matchup

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