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

GPT-5.5 (Low) vs GPT-6 Luna (Medium). 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 (Medium)On the frontier
Intelligence
29.90
Total cost
$31.2
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 (Medium)Difference
Intelligence (higher is better)30.729.9−2.6% GPT-6 Luna (Medium) is 2.6% less intelligent
Total AA cost (lower is better)Not reported$31.17— not comparable
End-to-end time (lower is better)8.14s8.25s+1.4% GPT-6 Luna (Medium) is 1.4% 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 (Medium): 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-medium · Markdown: /api/v1/compare/gpt-5-5-low/gpt-6-luna-medium?format=md · llms.txt · agent skill