Claude Opus 5.5 (Medium, Default Fallback) vs K2-V2 (Low)

Claude Opus 5.5 (Medium, Default Fallback) vs K2-V2 (Low). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude Opus 5.5 (Medium, Default Fallback)Off the frontier
Intelligence
51.20
Total cost
$1627
Institute of Foundation ModelsK2-V2 (Low)Not ranked · benchmark data missing
Intelligence
7.30
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 Opus 5.5 (Medium, Default Fallback)K2-V2 (Low)Difference
Intelligence (higher is better)51.27.3−85.7% K2-V2 (Low) is 85.7% less intelligent
Total AA cost (lower is better)$1,626.81Not reported— not comparable
End-to-end time (lower is better)20.68sNot reported— not comparable
Price per 1M tokens (in / out)$4.00 / $20.0—
Input modalitiesText, ImageText
Open this matchup in the interactive pickerClaude Opus 5.5 (Medium, Default Fallback): what beats itK2-V2 (Low): 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-5-5-medium/k2-v2-low · Markdown: /api/v1/compare/claude-opus-5-5-medium/k2-v2-low?format=md · llms.txt · agent skill