GPT-5 (High) vs GPT-5.5 (Xhigh)

GPT-5 (High) vs GPT-5.5 (Xhigh). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5 (High)Not ranked · benchmark data missing
Intelligence
23.00
Total cost
-
OpenAIGPT-5.5 (Xhigh)Off the frontier
Intelligence
38.40
Total cost
$5294
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.

MetricGPT-5 (High)GPT-5.5 (Xhigh)Difference
Intelligence (higher is better)23.038.4+67.0% GPT-5.5 (Xhigh) is 67.0% more intelligent
Total AA cost (lower is better)Not reported$5,294.36— not comparable
End-to-end time (lower is better)83.85s44.96s−46.4% GPT-5.5 (Xhigh) is 46.4% faster
Price per 1M tokens (in / out)$1.25 / $10.0$5.00 / $30.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5 (High): what beats itGPT-5.5 (Xhigh): what beats it
Matchup

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