GPT-5.6 Luna (Medium) vs Grok 3 Reasoning Beta

GPT-5.6 Luna (Medium) vs Grok 3 Reasoning Beta. 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 (Medium)Off the frontier
Intelligence
25.00
Total cost
$44.3
SpaceXAIGrok 3 Reasoning BetaNot ranked · benchmark data missing
Intelligence
10.40
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 (Medium)Grok 3 Reasoning BetaDifference
Intelligence (higher is better)25.010.4−58.4% Grok 3 Reasoning Beta is 58.4% less intelligent
Total AA cost (lower is better)$44.32Not reported— not comparable
End-to-end time (lower is better)5.82sNot reported— not comparable
Price per 1M tokens (in / out)$0.20 / $1.20—
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.6 Luna (Medium): what beats itGrok 3 Reasoning Beta: what beats it
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Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-6-luna-medium/grok-3-reasoning · Markdown: /api/v1/compare/gpt-5-6-luna-medium/grok-3-reasoning?format=md · llms.txt · agent skill