GPT-5.1 Codex (High) vs GPT-5.5 (Low)
GPT-5.1 Codex (High) vs GPT-5.5 (Low). 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-5.1 Codex (High) | GPT-5.5 (Low) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 23.7 | 30.7 | +29.5% GPT-5.5 (Low) is 29.5% more intelligent |
| Total AA cost (lower is better) | Not reported | Not reported | — not comparable |
| End-to-end time (lower is better) | 12.93s | 8.12s | −37.2% GPT-5.5 (Low) is 37.2% faster |
| Price per 1M tokens (in / out) | $1.25 / $10.0 | $5.00 / $30.0 | |
| Input modalities | Text, Image | Text, Image |
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/gpt-5-1-codex/gpt-5-5-low · Markdown: /api/v1/compare/gpt-5-1-codex/gpt-5-5-low?format=md · llms.txt · agent skill