Claude 2.1 vs Claude Opus 5 (High)

Claude 2.1 vs Claude Opus 5 (High). 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 Opus 5 (High)Off the frontier
Intelligence
48.10
Total cost
$4332
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 Opus 5 (High)Difference
Intelligence (higher is better)5.648.1+758.9% Claude Opus 5 (High) is 8.6× more intelligent
Total AA cost (lower is better)Not reported$4,331.68— not comparable
End-to-end time (lower is better)Not reported20.99s— not comparable
Price per 1M tokens (in / out)—$5.00 / $25.0
Input modalitiesTextText, Image
Open this matchup in the interactive pickerClaude 2.1: what beats itClaude Opus 5 (High): 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-opus-5-high · Markdown: /api/v1/compare/claude-21/claude-opus-5-high?format=md · llms.txt · agent skill