GPT-5.3 Codex (Xhigh) vs Mercury 2

GPT-5.3 Codex (Xhigh) vs Mercury 2. 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
-
InceptionMercury 2Off the frontier
Intelligence
10.80
Total cost
$105
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)Mercury 2Difference
Intelligence (higher is better)32.510.8−66.8% Mercury 2 is 66.8% less intelligent
Total AA cost (lower is better)Not reported$104.94— not comparable
End-to-end time (lower is better)62.23s8.08s−87.0% Mercury 2 is 87.0% faster
Price per 1M tokens (in / out)$1.75 / $14.0$0.25 / $0.75
Input modalitiesText, ImageText
Open this matchup in the interactive pickerGPT-5.3 Codex (Xhigh): what beats itMercury 2: what beats it
Matchup

Compare something else

Agents: Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-3-codex/mercury-2 · Markdown: /api/v1/compare/gpt-5-3-codex/mercury-2?format=md · llms.txt · agent skill