Claude 2.1 vs Claude Sonnet 5.5 (Low, Default Fallback)

Claude 2.1 vs Claude Sonnet 5.5 (Low, 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 2.1Not ranked · benchmark data missing
Intelligence
5.60
Total cost
-
AnthropicClaude Sonnet 5.5 (Low, Default Fallback)Off the frontier
Intelligence
35.90
Total cost
$482
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 2.1Claude Sonnet 5.5 (Low, Default Fallback)Difference
Intelligence (higher is better)5.635.9+541.1% Claude Sonnet 5.5 (Lo… is 6.4× more intelligent
Total AA cost (lower is better)Not reported$482.13— not comparable
End-to-end time (lower is better)Not reported6.19s— not comparable
Price per 1M tokens (in / out)—$2.00 / $10.0
Input modalitiesTextText, Image
Open this matchup in the interactive pickerClaude 2.1: what beats itClaude Sonnet 5.5 (Low, 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-21/claude-sonnet-5-5-low · Markdown: /api/v1/compare/claude-21/claude-sonnet-5-5-low?format=md · llms.txt · agent skill