GPT-5.3 Codex (Xhigh) vs Grok 4

GPT-5.3 Codex (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-5.3 Codex (Xhigh)Not ranked · benchmark data missing
Intelligence
32.50
Total cost
-
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-5.3 Codex (Xhigh)Grok 4Difference
Intelligence (higher is better)32.522.5−30.8% Grok 4 is 30.8% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)62.23s13.47s−78.4% Grok 4 is 78.4% faster
Price per 1M tokens (in / out)$1.75 / $14.0$3.00 / $15.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.3 Codex (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-5-3-codex/grok-4 · Markdown: /api/v1/compare/gpt-5-3-codex/grok-4?format=md · llms.txt · agent skill