GPT-5.3 Codex (Xhigh) vs Step 3.5 Flash 2603
GPT-5.3 Codex (Xhigh) vs Step 3.5 Flash 2603. A reliable intelligence-versus-cost verdict requires both models' intelligence scores and benchmark-run costs. Missing data is not a performance verdict.
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.
| Metric | GPT-5.3 Codex (Xhigh) | Step 3.5 Flash 2603 | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 32.5 | 17.0 | −47.7% Step 3.5 Flash 2603 is 47.7% less intelligent |
| Total AA cost (lower is better) | Not reported | Not reported | — not comparable |
| End-to-end time (lower is better) | 60.49s | 20.55s | −66.0% Step 3.5 Flash 2603 is 66.0% faster |
| Price per 1M tokens (in / out) | $1.75 / $14.0 | $0.10 / $0.30 | |
| Input modalities | Text, Image | Text |
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-3-codex/step-3-5-flash · Markdown: /api/v1/compare/gpt-5-3-codex/step-3-5-flash?format=md · llms.txt · agent skill