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

GPT-5.6 Luna (Non-reasoning) 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 (Non-reasoning)Grok 4.20 0309 v2 (Reasoning)Difference
Intelligence (higher is better)15.525.7+65.8% Grok 4.20 0309 v2 (Re… is 65.8% more intelligent
Total AA cost (lower is better)$22.97Not reported— not comparable
End-to-end time (lower is better)4.98s23.55s+372.9% Grok 4.20 0309 v2 (Re… is 372.9% slower
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-non-reasoning/grok-4-20 · Markdown: /api/v1/compare/gpt-5-6-luna-non-reasoning/grok-4-20?format=md · llms.txt · agent skill