GPT-5.3 Codex (Xhigh) vs GPT-6 Luna (Low)

GPT-5.3 Codex (Xhigh) vs GPT-6 Luna (Low). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.3 Codex (Xhigh)Not ranked · benchmark data missing
Intelligence
32.50
Total cost
-
OpenAIGPT-6 Luna (Low)On the frontier
Intelligence
21.50
Total cost
$10.6
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-5.3 Codex (Xhigh)GPT-6 Luna (Low)Difference
Intelligence (higher is better)32.521.5−33.8% GPT-6 Luna (Low) is 33.8% less intelligent
Total AA cost (lower is better)Not reported$10.63— not comparable
End-to-end time (lower is better)58.60s6.75s−88.5% GPT-6 Luna (Low) is 88.5% faster
Price per 1M tokens (in / out)$1.75 / $14.0$0.10 / $0.50
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.3 Codex (Xhigh): what beats itGPT-6 Luna (Low): 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-5-3-codex/gpt-6-luna-low · Markdown: /api/v1/compare/gpt-5-3-codex/gpt-6-luna-low?format=md · llms.txt · agent skill