Claude 4 Opus (Reasoning) vs Claude Sonnet 5.5 (Low, Default Fallback)
Claude 4 Opus (Reasoning) vs Claude Sonnet 5.5 (Low, Default Fallback). 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 Opus (Reasoning) | Claude Sonnet 5.5 (Low, Default Fallback) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 20.6 | 35.9 | +74.3% Claude Sonnet 5.5 (Lo… is 74.3% more intelligent |
| Total AA cost (lower is better) | Not reported | $482.13 | — not comparable |
| End-to-end time (lower is better) | Not reported | 5.94s | — not comparable |
| Price per 1M tokens (in / out) | $15.0 / $75.0 | $2.00 / $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-4-opus-thinking/claude-sonnet-5-5-low · Markdown: /api/v1/compare/claude-4-opus-thinking/claude-sonnet-5-5-low?format=md · llms.txt · agent skill