Claude Opus 4.5 (Reasoning) vs Claude Sonnet 5 (Max)

Claude Opus 4.5 (Reasoning) vs Claude Sonnet 5 (Max). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude Opus 4.5 (Reasoning)Not ranked · benchmark data missing
Intelligence
29.10
Total cost
-
AnthropicClaude Sonnet 5 (Max)Off the frontier
Intelligence
38.20
Total cost
$6998
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 Opus 4.5 (Reasoning)Claude Sonnet 5 (Max)Difference
Intelligence (higher is better)29.138.2+31.3% Claude Sonnet 5 (Max) is 31.3% more intelligent
Total AA cost (lower is better)Not reported$6,998.25— not comparable
End-to-end time (lower is better)24.17s184.22s+662.2% Claude Sonnet 5 (Max) is 662.2% slower
Price per 1M tokens (in / out)$5.00 / $25.0$2.00 / $10.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerClaude Opus 4.5 (Reasoning): what beats itClaude Sonnet 5 (Max): 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-opus-4-5-thinking/claude-sonnet-5 · Markdown: /api/v1/compare/claude-opus-4-5-thinking/claude-sonnet-5?format=md · llms.txt · agent skill