Model comparison
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Differences vs. Gemini 4 Hydrogen · xhigh
Score, cost & time differences
Current baseline · Gemini 4 Hydrogen · xhigh
85Knowledge & reasoning
Compared with Gemini 4 Hydrogen · xhigh
- Claude Sonnet 5.5 · xhigh
Knowledge & reasoning: tiedCost $0.13 ($1.33 less)Evaluation time 3m 44s (8m 11s less)
Differences reflect these evaluation tasks. Cost and time cover the same dimension, not a typical conversation. Scoring & cost notes
| Metric | Gemini 4 Hydrogen · xhigh | Claude Sonnet 5.5 · xhigh |
|---|---|---|
| Knowledge & reasoning | Gemini 4 Hydrogenxhigh 85 | Claude Sonnet 5.5xhigh 85Tied |
| Overall | Gemini 4 Hydrogenxhigh 80.70 | Claude Sonnet 5.5xhigh 81.95+1.25 pts |
| Backend engineering | Gemini 4 Hydrogenxhigh 83 | Claude Sonnet 5.5xhigh 84+1 pts |
| Frontend interaction | Gemini 4 Hydrogenxhigh 85 | Claude Sonnet 5.5xhigh 86+1 pts |
| Visual aesthetics | Gemini 4 Hydrogenxhigh 70 | Claude Sonnet 5.5xhigh 73+3 pts |
| Maintainability | Gemini 4 Hydrogenxhigh 61 | Claude Sonnet 5.5xhigh 66+5 pts |
Knowledge & reasoning evaluation · Evaluation consumption, not a monthly subscription fee
Cost & time
Knowledge & reasoning evaluation| Metric | Gemini 4 Hydrogen · xhigh | Claude Sonnet 5.5 · xhigh |
|---|---|---|
| Cost | Gemini 4 Hydrogenxhigh $1.47 | Claude Sonnet 5.5xhigh $0.13−$1.33 |
| Evaluation time | Gemini 4 Hydrogenxhigh 11m 55s | Claude Sonnet 5.5xhigh 3m 44s−68.7% |
Capability profiles
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Behind each score
Expand to inspect each subaxis.
Backend engineeringSubscores
| Scoring dimension | Gemini 4 Hydrogenxhigh | Claude Sonnet 5.5xhigh |
|---|---|---|
| Contracts and boundaries | 13 / 20 | 15 / 20 |
| Retries and failures | 17 / 20 | 18 / 20 |
| CI and adversarial review | 18 / 20 | 16 / 20 |
| Transactions and consistency | 18 / 20 | 18 / 20 |
| Caching and regression | 17 / 20 | 17 / 20 |
Frontend interactionSubscores
| Scoring dimension | Gemini 4 Hydrogenxhigh | Claude Sonnet 5.5xhigh |
|---|---|---|
| Layout and adaptation | — | 17 / 20 |
| Interaction behavior | — | 17 / 20 |
| State continuity | — | 20 / 20 |
| Accessibility and feedback | — | 15 / 15 |
| State validation and regression | — | 17 / 25 |
Knowledge & reasoningSubscores
| Scoring dimension | Gemini 4 Hydrogenxhigh | Claude Sonnet 5.5xhigh |
|---|---|---|
| Mathematical reasoning | 15 / 15 | 10 / 15 |
| Computer science & AI | 10 / 15 | 10 / 15 |
| Science and engineering | 10 / 10 | 10 / 10 |
| Life sciences and medicine | 15 / 20 | 20 / 20 |
| Humanities and general knowledge | 35 / 40 | 35 / 40 |
Visual aestheticsSubscores
| Scoring dimension | Gemini 4 Hydrogenxhigh | Claude Sonnet 5.5xhigh |
|---|---|---|
| Composition | 19 / 20 | 20 / 20 |
| Spacing and alignment | 17 / 20 | 16 / 20 |
| Typography and expression | 18 / 20 | 18 / 20 |
| Color and surfaces | 19 / 20 | 19 / 20 |
| Control styling | 16 / 20 | 17 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.
MaintainabilitySubscores
| Scoring dimension | Gemini 4 Hydrogenxhigh | Claude Sonnet 5.5xhigh |
|---|---|---|
| Semantic clarity | 16 / 20 | 15 / 20 |
| Control-flow organization | 20 / 20 | 20 / 20 |
| Locality of changes | 15 / 20 | 16 / 20 |
| State and lifecycle | 17 / 20 | 17 / 20 |
| Implementation economy | 17 / 20 | 19 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.