Claude 3.7 Sonnet (Reasoning) vs Claude Opus 5.5 (High, Default Fallback)

Claude 3.7 Sonnet (Reasoning) vs Claude Opus 5.5 (High, Default Fallback). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude 3.7 Sonnet (Reasoning)Not ranked · benchmark data missing
Intelligence
17.70
Total cost
-
AnthropicClaude Opus 5.5 (High, Default Fallback)On the frontier
Intelligence
53.60
Total cost
$2172
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 3.7 Sonnet (Reasoning)Claude Opus 5.5 (High, Default Fallback)Difference
Intelligence (higher is better)17.753.6+202.8% Claude Opus 5.5 (High… is 3.0× more intelligent
Total AA cost (lower is better)Not reported$2,172.43— not comparable
End-to-end time (lower is better)Not reported33.81s— not comparable
Price per 1M tokens (in / out)—$4.00 / $20.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerClaude 3.7 Sonnet (Reasoning): what beats itClaude Opus 5.5 (High, Default Fallback): 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-3-7-sonnet-thinking/claude-opus-5-5-high · Markdown: /api/v1/compare/claude-3-7-sonnet-thinking/claude-opus-5-5-high?format=md · llms.txt · agent skill