GPT-5.6 Luna (Xhigh) vs Grok 4.20 0309 v2 (Reasoning)

GPT-5.6 Luna (Xhigh) vs Grok 4.20 0309 v2 (Reasoning). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

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 4.20 0309 v2 (Reasoning)Difference
Intelligence (higher is better)34.625.7−25.7% Grok 4.20 0309 v2 (Re… is 25.7% less intelligent
Total AA cost (lower is better)$179.33Not reported— not comparable
End-to-end time (lower is better)45.80s23.46s−48.8% Grok 4.20 0309 v2 (Re… is 48.8% faster
Price per 1M tokens (in / out)$0.20 / $1.20$1.25 / $2.50
Input modalitiesText, ImageText, Image
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-4-20 · Markdown: /api/v1/compare/gpt-5-6-luna-xhigh/grok-4-20?format=md · llms.txt · agent skill