Claude Sonnet 5 (Medium) vs Step 3.5 Flash

Claude Sonnet 5 (Medium) 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.

AnthropicClaude Sonnet 5 (Medium)Off the frontier
Intelligence
28.10
Total cost
$1218
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.

MetricClaude Sonnet 5 (Medium)Step 3.5 FlashDifference
Intelligence (higher is better)28.116.6−40.9% Step 3.5 Flash is 40.9% less intelligent
Total AA cost (lower is better)$1,218.17Not reported— not comparable
End-to-end time (lower is better)9.01s20.68s+129.5% Step 3.5 Flash is 129.5% 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 (Medium): 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/claude-sonnet-5-medium/step-3-5-flash-0202 · Markdown: /api/v1/compare/claude-sonnet-5-medium/step-3-5-flash-0202?format=md · llms.txt · agent skill