Claude Fable 5.1 (Xhigh, Default Fallback) vs Sonar Reasoning

Claude Fable 5.1 (Xhigh, Default Fallback) vs Sonar Reasoning. A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

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 (Xhigh, Default Fallback)Sonar ReasoningDifference
Intelligence (higher is better)53.28.7−83.6% Sonar Reasoning is 83.6% less intelligent
Total AA cost (lower is better)$9,063.11Not reported— not comparable
End-to-end time (lower is better)77.16sNot reported— not comparable
Price per 1M tokens (in / out)$10.0 / $50.0—
Input modalitiesText, ImageText
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-xhigh/sonar-reasoning · Markdown: /api/v1/compare/claude-fable-5-1-xhigh/sonar-reasoning?format=md · llms.txt · agent skill