Claude Fable 5.1 (Max, Default Fallback) vs Grok 4.3 (Medium)

Claude Fable 5.1 (Max, Default Fallback) vs Grok 4.3 (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 5.1 (Max, Default Fallback)Off the frontier
Intelligence
53.40
Total cost
$13129
SpaceXAIGrok 4.3 (Medium)Not ranked · benchmark data missing
Intelligence
24.80
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 (Max, Default Fallback)Grok 4.3 (Medium)Difference
Intelligence (higher is better)53.424.8−53.6% Grok 4.3 (Medium) is 53.6% less intelligent
Total AA cost (lower is better)$13,128.86Not reported— not comparable
End-to-end time (lower is better)224.30s21.27s−90.5% Grok 4.3 (Medium) is 90.5% faster
Price per 1M tokens (in / out)$10.0 / $50.0$1.25 / $2.50
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerClaude Fable 5.1 (Max, Default Fallback): what beats itGrok 4.3 (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-5-1/grok-4-3-medium · Markdown: /api/v1/compare/claude-fable-5-1/grok-4-3-medium?format=md · llms.txt · agent skill