Claude Fable 5 (Max, Opus 4.8 Fallback) vs K2-V2 (Medium)

Claude Fable 5 (Max, Opus 4.8 Fallback) vs K2-V2 (Medium). 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 (Max, Opus 4.8 Fallback)Off the frontier
Intelligence
49.60
Total cost
$11161
Institute of Foundation ModelsK2-V2 (Medium)Not ranked · benchmark data missing
Intelligence
9.00
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 (Max, Opus 4.8 Fallback)K2-V2 (Medium)Difference
Intelligence (higher is better)49.69.0−81.9% K2-V2 (Medium) is 81.9% less intelligent
Total AA cost (lower is better)$11,160.86Not reported— not comparable
End-to-end time (lower is better)77.70sNot 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 (Max, Opus 4.8 Fallback): what beats itK2-V2 (Medium): 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/k2-v2-medium · Markdown: /api/v1/compare/claude-fable-5/k2-v2-medium?format=md · llms.txt · agent skill