Model comparison
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Differences vs. Claude Sonnet 5.5 · xhigh
Score, cost & time differences
Current baseline · Claude Sonnet 5.5 · xhigh
73Visual aesthetics
Compared with Claude Sonnet 5.5 · xhigh
- Claude Opus 5 · max
Visual aesthetics: tiedComparable cost unavailableComparable time unavailable
Differences reflect these evaluation tasks. Cost and time cover the same dimension, not a typical conversation. Scoring & cost notes
| Metric | Claude Sonnet 5.5 · xhigh | Claude Opus 5 · max |
|---|---|---|
| Visual aesthetics | Claude Sonnet 5.5xhigh 73 | Claude Opus 5max 73Tied |
| Overall | Claude Sonnet 5.5xhigh 81.95 | Claude Opus 5max 80.35−1.6 pts |
| Backend engineering | Claude Sonnet 5.5xhigh 84 | Claude Opus 5max 66−18 pts |
| Frontend interaction | Claude Sonnet 5.5xhigh 86 | Claude Opus 5max 82−4 pts |
| Knowledge & reasoning | Claude Sonnet 5.5xhigh 85 | Claude Opus 5max 95+10 pts |
| Maintainability | Claude Sonnet 5.5xhigh 66 | Claude Opus 5max 61−5 pts |
Visual aesthetics evaluation · Evaluation consumption, not a monthly subscription fee
Cost & time
Visual aesthetics evaluation| Metric | Claude Sonnet 5.5 · xhigh | Claude Opus 5 · max |
|---|---|---|
| Cost | Claude Sonnet 5.5xhigh N/A | Claude Opus 5max N/A |
| Evaluation time | Claude Sonnet 5.5xhigh — | Claude Opus 5max — |
Capability profiles
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Behind each score
Expand to inspect each subaxis.
Backend engineeringSubscores
| Scoring dimension | Claude Sonnet 5.5xhigh | Claude Opus 5max |
|---|---|---|
| Contracts and boundaries | 15 / 20 | 11 / 20 |
| Retries and failures | 18 / 20 | 15 / 20 |
| CI and adversarial review | 16 / 20 | 14 / 20 |
| Transactions and consistency | 18 / 20 | 15 / 20 |
| Caching and regression | 17 / 20 | 11 / 20 |
Frontend interactionSubscores
| Scoring dimension | Claude Sonnet 5.5xhigh | Claude Opus 5max |
|---|---|---|
| Layout and adaptation | 17 / 20 | 20 / 20 |
| Interaction behavior | 17 / 20 | 17 / 20 |
| State continuity | 20 / 20 | 18 / 20 |
| Accessibility and feedback | 15 / 15 | 12 / 15 |
| State validation and regression | 17 / 25 | 15 / 25 |
Knowledge & reasoningSubscores
| Scoring dimension | Claude Sonnet 5.5xhigh | Claude Opus 5max |
|---|---|---|
| Mathematical reasoning | 10 / 15 | 15 / 15 |
| Computer science & AI | 10 / 15 | 10 / 15 |
| Science and engineering | 10 / 10 | 10 / 10 |
| Life sciences and medicine | 20 / 20 | 20 / 20 |
| Humanities and general knowledge | 35 / 40 | 40 / 40 |
Visual aestheticsSubscores
| Scoring dimension | Claude Sonnet 5.5xhigh | Claude Opus 5max |
|---|---|---|
| Composition | 20 / 20 | 18 / 20 |
| Spacing and alignment | 16 / 20 | 18 / 20 |
| Typography and expression | 18 / 20 | 18 / 20 |
| Color and surfaces | 19 / 20 | 19 / 20 |
| Control styling | 17 / 20 | 17 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.
MaintainabilitySubscores
| Scoring dimension | Claude Sonnet 5.5xhigh | Claude Opus 5max |
|---|---|---|
| Semantic clarity | 15 / 20 | 15 / 20 |
| Control-flow organization | 20 / 20 | 20 / 20 |
| Locality of changes | 16 / 20 | 16 / 20 |
| State and lifecycle | 17 / 20 | 18 / 20 |
| Implementation economy | 19 / 20 | 16 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.