GPT-5.1 Codex (High) vs gpt-oss-120b (Low)

GPT-5.1 Codex (High) vs gpt-oss-120b (Low). A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.

OpenAIGPT-5.1 Codex (High)Not ranked · benchmark data missing
Intelligence
23.70
Total cost
-
OpenAIgpt-oss-120b (Low)Not ranked · benchmark data missing
Intelligence
10.20
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-5.1 Codex (High)gpt-oss-120b (Low)Difference
Intelligence (higher is better)23.710.2−57.0% gpt-oss-120b (Low) is 57.0% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)11.52s10.19s−11.5% gpt-oss-120b (Low) is 11.5% faster
Price per 1M tokens (in / out)$1.25 / $10.0$0.13 / $0.59
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.1 Codex (High): what beats itgpt-oss-120b (Low): 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-5-1-codex/gpt-oss-120b-low · Markdown: /api/v1/compare/gpt-5-1-codex/gpt-oss-120b-low?format=md · llms.txt · agent skill