Claude Fable 5.1 (High, Default Fallback) vs GPT-5.1 Codex mini (High)

Claude Fable 5.1 (High, Default Fallback) vs GPT-5.1 Codex mini (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 (High, Default Fallback)GPT-5.1 Codex mini (High)Difference
Intelligence (higher is better)51.220.4−60.2% GPT-5.1 Codex mini (H… is 60.2% less intelligent
Total AA cost (lower is better)$5,241.59Not reported— not comparable
End-to-end time (lower is better)28.58s22.80s−20.2% GPT-5.1 Codex mini (H… is 20.2% faster
Price per 1M tokens (in / out)$10.0 / $50.0$0.25 / $2.00
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-high/gpt-5-1-codex-mini · Markdown: /api/v1/compare/claude-fable-5-1-high/gpt-5-1-codex-mini?format=md · llms.txt · agent skill