GPT-5.3 Codex (Xhigh) vs gpt-oss-120b (High)

GPT-5.3 Codex (Xhigh) vs gpt-oss-120b (High). 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
-
OpenAIgpt-oss-120b (High)Off the frontier
Intelligence
11.60
Total cost
$123
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)gpt-oss-120b (High)Difference
Intelligence (higher is better)32.511.6−64.3% gpt-oss-120b (High) is 64.3% less intelligent
Total AA cost (lower is better)Not reported$122.71— not comparable
End-to-end time (lower is better)60.49s11.61s−80.8% gpt-oss-120b (High) is 80.8% faster
Price per 1M tokens (in / out)$1.75 / $14.0$0.15 / $0.60
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.3 Codex (Xhigh): what beats itgpt-oss-120b (High): 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/gpt-oss-120b · Markdown: /api/v1/compare/gpt-5-3-codex/gpt-oss-120b?format=md · llms.txt · agent skill