Claude Haiku 5.5 (Medium) vs GPT-5.1 Codex (High)

Claude Haiku 5.5 (Medium) vs GPT-5.1 Codex (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 Haiku 5.5 (Medium)GPT-5.1 Codex (High)Difference
Intelligence (higher is better)34.523.7−31.3% GPT-5.1 Codex (High) is 31.3% less intelligent
Total AA cost (lower is better)$56.36Not reported— not comparable
End-to-end time (lower is better)13.10s11.52s−12.1% GPT-5.1 Codex (High) is 12.1% faster
Price per 1M tokens (in / out)$0.10 / $0.50$1.25 / $10.0
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-haiku-5-5-medium/gpt-5-1-codex · Markdown: /api/v1/compare/claude-haiku-5-5-medium/gpt-5-1-codex?format=md · llms.txt · agent skill