GPT-5.4 (Xhigh) vs GPT-5.5 (High)

GPT-5.4 (Xhigh) vs GPT-5.5 (High). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.4 (Xhigh)Not ranked · benchmark data missing
Intelligence
39.00
Total cost
-
OpenAIGPT-5.5 (High)Off the frontier
Intelligence
37.00
Total cost
$3411
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-5.4 (Xhigh)GPT-5.5 (High)Difference
Intelligence (higher is better)39.037.0−5.1% GPT-5.5 (High) is 5.1% less intelligent
Total AA cost (lower is better)Not reported$3,410.76— not comparable
End-to-end time (lower is better)144.29s19.56s−86.4% GPT-5.5 (High) is 86.4% faster
Price per 1M tokens (in / out)$2.50 / $15.0$5.00 / $30.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.4 (Xhigh): what beats itGPT-5.5 (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-5-4/gpt-5-5-high · Markdown: /api/v1/compare/gpt-5-4/gpt-5-5-high?format=md · llms.txt · agent skill