GPT-5.1 Codex (High) vs o1

GPT-5.1 Codex (High) vs o1. 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
-
OpenAIo1Not ranked · benchmark data missing
Intelligence
15.20
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)o1Difference
Intelligence (higher is better)23.715.2−35.9% o1 is 35.9% less intelligent
Total AA cost (lower is better)Not reportedNot reported— not comparable
End-to-end time (lower is better)12.01sNot reported— not comparable
Price per 1M tokens (in / out)$1.25 / $10.0$15.0 / $60.0
Input modalitiesText, ImageText, Image
Open this matchup in the interactive pickerGPT-5.1 Codex (High): what beats ito1: 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/o1 · Markdown: /api/v1/compare/gpt-5-1-codex/o1?format=md · llms.txt · agent skill