GPT-5.5 (Low) vs GPT-6 Luna (Xhigh)

GPT-5.5 (Low) vs GPT-6 Luna (Xhigh). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.5 (Low)Not ranked · benchmark data missing
Intelligence
30.70
Total cost
-
OpenAIGPT-6 Luna (Xhigh)On the frontier
Intelligence
34.60
Total cost
$66.8
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 (Low)GPT-6 Luna (Xhigh)Difference
Intelligence (higher is better)30.734.6+12.7% GPT-6 Luna (Xhigh) is 12.7% more intelligent
Total AA cost (lower is better)Not reported$66.81— not comparable
End-to-end time (lower is better)7.83s28.32s+261.7% GPT-6 Luna (Xhigh) is 261.7% slower
Price per 1M tokens (in / out)$5.00 / $30.0$0.10 / $0.50
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.5 (Low): what beats itGPT-6 Luna (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-5-5-low/gpt-6-luna-xhigh · Markdown: /api/v1/compare/gpt-5-5-low/gpt-6-luna-xhigh?format=md · llms.txt · agent skill