Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) vs GPT-5 Codex (high)
Claude Sonnet 5 (Adaptive Reasoning, Medium Effort) vs GPT-5 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 (Adaptive Reasoning, Medium Effort) | GPT-5 Codex (high) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 28.4 | 24.9 | −12.3% GPT-5 Codex (high) is 12.3% less intelligent |
| Total AA cost (lower is better) | $1,218.17 | Not reported | — not comparable |
| End-to-end time (lower is better) | 9.32s | Not reported | — not comparable |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $1.25 / $10.0 | |
| Input modalities | Not reported | Not reported |
Matchup
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Accept: text/markdown or ?format=md returns this page as Markdown. JSON: /api/v1/compare/claude-sonnet-5-medium/gpt-5-codex · Markdown: /api/v1/compare/claude-sonnet-5-medium/gpt-5-codex?format=md · llms.txt · agent skill