Claude Sonnet 5.5 (Low, Default Fallback) vs GPT-5.1 Codex (High)
Claude Sonnet 5.5 (Low, Default Fallback) vs GPT-5.1 Codex (High). 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 | Claude Sonnet 5.5 (Low, Default Fallback) | GPT-5.1 Codex (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 35.9 | 23.7 | −34.0% GPT-5.1 Codex (High) is 34.0% less intelligent |
| Total AA cost (lower is better) | $482.13 | Not reported | — not comparable |
| End-to-end time (lower is better) | 6.19s | 12.01s | +94.0% GPT-5.1 Codex (High) is 94.0% slower |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $1.25 / $10.0 | |
| 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/claude-sonnet-5-5-low/gpt-5-1-codex · Markdown: /api/v1/compare/claude-sonnet-5-5-low/gpt-5-1-codex?format=md · llms.txt · agent skill