GPT-5.2 Codex (Xhigh) vs gpt-oss-20b (High)

GPT-5.2 Codex (Xhigh) vs gpt-oss-20b (High). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.2 Codex (Xhigh)Not ranked · benchmark data missing
Intelligence
28.50
Total cost
-
OpenAIgpt-oss-20b (High)Off the frontier
Intelligence
9.00
Total cost
$28.8
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-5.2 Codex (Xhigh)gpt-oss-20b (High)Difference
Intelligence (higher is better)28.59.0−68.4% gpt-oss-20b (High) is 68.4% less intelligent
Total AA cost (lower is better)Not reported$28.81— not comparable
End-to-end time (lower is better)151.19s16.79s−88.9% gpt-oss-20b (High) is 88.9% faster
Price per 1M tokens (in / out)$1.75 / $14.0$0.05 / $0.22
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.2 Codex (Xhigh): what beats itgpt-oss-20b (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-5-2-codex/gpt-oss-20b · Markdown: /api/v1/compare/gpt-5-2-codex/gpt-oss-20b?format=md · llms.txt · agent skill