Claude 4.5 Sonnet (Reasoning) vs GPT-5 Codex (High)
Claude 4.5 Sonnet (Reasoning) 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 4.5 Sonnet (Reasoning) | GPT-5 Codex (High) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 20.7 | 24.9 | +20.3% GPT-5 Codex (High) is 20.3% more intelligent |
| Total AA cost (lower is better) | $1,501.22 | Not reported | — not comparable |
| End-to-end time (lower is better) | 20.84s | 13.09s | −37.2% GPT-5 Codex (High) is 37.2% faster |
| Price per 1M tokens (in / out) | $3.00 / $15.0 | $1.25 / $10.0 | |
| Input modalities | Text, Image | Text, Image |
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