GPT-5.4 (Low) vs GPT-5.6 Luna (Medium)

GPT-5.4 (Low) vs GPT-5.6 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-5.4 (Low)Not ranked · benchmark data missing
Intelligence
27.60
Total cost
-
OpenAIGPT-5.6 Luna (Medium)Off the frontier
Intelligence
25.00
Total cost
$44.3
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 (Low)GPT-5.6 Luna (Medium)Difference
Intelligence (higher is better)27.625.0−9.4% GPT-5.6 Luna (Medium) is 9.4% less intelligent
Total AA cost (lower is better)Not reported$44.32— not comparable
End-to-end time (lower is better)8.85s6.43s−27.3% GPT-5.6 Luna (Medium) is 27.3% faster
Price per 1M tokens (in / out)$2.50 / $15.0$0.20 / $1.20
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.4 (Low): what beats itGPT-5.6 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-5-4-low/gpt-5-6-luna-medium · Markdown: /api/v1/compare/gpt-5-4-low/gpt-5-6-luna-medium?format=md · llms.txt · agent skill