GPT-5.6 Luna (Xhigh) vs Grok 4

GPT-5.6 Luna (Xhigh) vs Grok 4. A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.6 Luna (Xhigh)Off the frontier
Intelligence
34.60
Total cost
$179
SpaceXAIGrok 4Not ranked · benchmark data missing
Intelligence
22.50
Total cost
-
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-5.6 Luna (Xhigh)Grok 4Difference
Intelligence (higher is better)34.622.5−35.0% Grok 4 is 35.0% less intelligent
Total AA cost (lower is better)$179.33Not reported— not comparable
End-to-end time (lower is better)40.39s15.00s−62.9% Grok 4 is 62.9% faster
Price per 1M tokens (in / out)$0.20 / $1.20$3.00 / $15.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.6 Luna (Xhigh): what beats itGrok 4: 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-5-6-luna-xhigh/grok-4 · Markdown: /api/v1/compare/gpt-5-6-luna-xhigh/grok-4?format=md · llms.txt · agent skill