Claude Fable 5.1 (Medium, Default Fallback) vs K2-V2 (Low)

Claude Fable 5.1 (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 Fable 5.1 (Medium, Default Fallback)Off the frontier
Intelligence
48.90
Total cost
$3983
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 Fable 5.1 (Medium, Default Fallback)K2-V2 (Low)Difference
Intelligence (higher is better)48.97.3−85.1% K2-V2 (Low) is 85.1% less intelligent
Total AA cost (lower is better)$3,983.28Not reported— not comparable
End-to-end time (lower is better)13.44sNot reported— not comparable
Price per 1M tokens (in / out)$10.0 / $50.0—
Input modalitiesText, ImageText
Open this matchup in the interactive pickerClaude Fable 5.1 (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-fable-5-1-medium/k2-v2-low · Markdown: /api/v1/compare/claude-fable-5-1-medium/k2-v2-low?format=md · llms.txt · agent skill