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

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

OpenAIGPT-5.5 (Xhigh)Off the frontier
Intelligence
38.40
Total cost
$5294
OpenAIGPT-5 nano (High)Not ranked · benchmark data missing
Intelligence
13.00
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.

MetricGPT-5.5 (Xhigh)GPT-5 nano (High)Difference
Intelligence (higher is better)38.413.0−66.1% GPT-5 nano (High) is 66.1% less intelligent
Total AA cost (lower is better)$5,294.36Not reported— not comparable
End-to-end time (lower is better)55.87s81.25s+45.4% GPT-5 nano (High) is 45.4% slower
Price per 1M tokens (in / out)$5.00 / $30.0$0.05 / $0.40
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.5 (Xhigh): what beats itGPT-5 nano (High): 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-5-5/gpt-5-nano · Markdown: /api/v1/compare/gpt-5-5/gpt-5-nano?format=md · llms.txt · agent skill