GPT-5 Codex (High) vs Grok 4.20 0309 v2 (Non-reasoning)

GPT-5 Codex (High) vs Grok 4.20 0309 v2 (Non-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 Codex (High)Grok 4.20 0309 v2 (Non-reasoning)Difference
Intelligence (higher is better)24.914.2−43.0% Grok 4.20 0309 v2 (No… is 43.0% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)12.97s5.15s−60.3% Grok 4.20 0309 v2 (No… is 60.3% faster
Price per 1M tokens (in / out)$1.25 / $10.0$1.25 / $2.50
Input modalitiesText, ImageText, Image
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-codex/grok-4-20-non-reasoning · Markdown: /api/v1/compare/gpt-5-codex/grok-4-20-non-reasoning?format=md · llms.txt · agent skill