GPT-5.6 Luna (Non-reasoning) vs Grok 4.3 (Low)

GPT-5.6 Luna (Non-reasoning) vs Grok 4.3 (Low). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.6 Luna (Non-reasoning)Off the frontier
Intelligence
15.50
Total cost
$23.0
SpaceXAIGrok 4.3 (Low)Not ranked · benchmark data missing
Intelligence
24.30
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 (Non-reasoning)Grok 4.3 (Low)Difference
Intelligence (higher is better)15.524.3+56.8% Grok 4.3 (Low) is 56.8% more intelligent
Total AA cost (lower is better)$22.97Not reported— not comparable
End-to-end time (lower is better)5.06s13.48s+166.4% Grok 4.3 (Low) is 166.4% slower
Price per 1M tokens (in / out)$0.20 / $1.20$1.25 / $2.50
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.6 Luna (Non-reasoning): what beats itGrok 4.3 (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-5-6-luna-non-reasoning/grok-4-3-low · Markdown: /api/v1/compare/gpt-5-6-luna-non-reasoning/grok-4-3-low?format=md · llms.txt · agent skill