Claude Fable 5.1 (Medium, Default Fallback) vs Claude Sonnet 4.6 (Non-reasoning, High)

Claude Fable 5.1 (Medium, Default Fallback) vs Claude Sonnet 4.6 (Non-reasoning, High). 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 (Medium, Default Fallback)Claude Sonnet 4.6 (Non-reasoning, High)Difference
Intelligence (higher is better)48.924.7−49.5% Claude Sonnet 4.6 (No… is 49.5% less intelligent
Total AA cost (lower is better)$3,983.28Not reported— not comparable
End-to-end time (lower is better)18.10s11.25s−37.8% Claude Sonnet 4.6 (No… is 37.8% faster
Price per 1M tokens (in / out)$10.0 / $50.0$3.00 / $15.0
Input modalitiesText, ImageText, Image
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/claude-sonnet-4-6 · Markdown: /api/v1/compare/claude-fable-5-1-medium/claude-sonnet-4-6?format=md · llms.txt · agent skill