Claude 2.1 vs Claude Fable 5.1 (Medium, Default Fallback)

Claude 2.1 vs Claude Fable 5.1 (Medium, Default Fallback). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

AnthropicClaude 2.1Not ranked · benchmark data missing
Intelligence
5.60
Total cost
-
AnthropicClaude Fable 5.1 (Medium, Default Fallback)Off the frontier
Intelligence
48.90
Total cost
$3983
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 2.1Claude Fable 5.1 (Medium, Default Fallback)Difference
Intelligence (higher is better)5.648.9+773.2% Claude Fable 5.1 (Med… is 8.7× more intelligent
Total AA cost (lower is better)Not reported$3,983.28— not comparable
End-to-end time (lower is better)Not reported13.16s— not comparable
Price per 1M tokens (in / out)—$10.0 / $50.0
Input modalitiesTextText, Image
Open this matchup in the interactive pickerClaude 2.1: what beats itClaude Fable 5.1 (Medium, Default Fallback): what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-21/claude-fable-5-1-medium · Markdown: /api/v1/compare/claude-21/claude-fable-5-1-medium?format=md · llms.txt · agent skill