Model comparison
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Differences vs. Gemini 3.8 Flash · default
Score, cost & time differences
Current baseline · Gemini 3.8 Flash · default
59.50Overall
Compared with Gemini 3.8 Flash · default
- GPT-6 Luna · xhigh
Overall: +1.6 ptsComparable cost unavailableEvaluation time 63m 52s (38m 31s more)
Differences reflect these evaluation tasks. Cost and time cover the same dimension, not a typical conversation. Scoring & cost notes
| Metric | Gemini 3.8 Flash · default | GPT-6 Luna · xhigh |
|---|---|---|
| Overall | Gemini 3.8 Flashdefault 59.50 | GPT-6 Lunaxhigh 61.10+1.6 pts |
| Backend engineering | Gemini 3.8 Flashdefault 60 | GPT-6 Lunaxhigh 57−3 pts |
| Frontend interaction | Gemini 3.8 Flashdefault 84 | GPT-6 Lunaxhigh 78−6 pts |
| Knowledge & reasoning | Gemini 3.8 Flashdefault 40 | GPT-6 Lunaxhigh 50+10 pts |
| Visual aesthetics | Gemini 3.8 Flashdefault 66 | GPT-6 Lunaxhigh 68+2 pts |
| Maintainability | Gemini 3.8 Flashdefault 59 | GPT-6 Lunaxhigh 59Tied |
Complete evaluation · Evaluation consumption, not a monthly subscription fee
Cost & time
Complete evaluation| Metric | Gemini 3.8 Flash · default | GPT-6 Luna · xhigh |
|---|---|---|
| Cost | Gemini 3.8 Flashdefault $0.13 | GPT-6 Lunaxhigh $0.061 |
| Evaluation time | Gemini 3.8 Flashdefault 25m 21s | GPT-6 Lunaxhigh 63m 52s+152% |
Capability profiles
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Behind each score
Expand to inspect each subaxis.
Backend engineeringSubscores
| Scoring dimension | Gemini 3.8 Flashdefault | GPT-6 Lunaxhigh |
|---|---|---|
| Contracts and boundaries | 9 / 20 | 10 / 20 |
| Retries and failures | 14 / 20 | 16 / 20 |
| CI and adversarial review | 13 / 20 | 9 / 20 |
| Transactions and consistency | 14 / 20 | 13 / 20 |
| Caching and regression | 10 / 20 | 9 / 20 |
Frontend interactionSubscores
| Scoring dimension | Gemini 3.8 Flashdefault | GPT-6 Lunaxhigh |
|---|---|---|
| Layout and adaptation | 20 / 20 | 18 / 20 |
| Interaction behavior | 20 / 20 | 20 / 20 |
| State continuity | 18 / 20 | 13 / 20 |
| Accessibility and feedback | 11 / 15 | 10 / 15 |
| State validation and regression | 15 / 25 | 17 / 25 |
Knowledge & reasoningSubscores
| Scoring dimension | Gemini 3.8 Flashdefault | GPT-6 Lunaxhigh |
|---|---|---|
| Mathematical reasoning | 5 / 15 | 0 / 15 |
| Computer science & AI | 10 / 15 | 5 / 15 |
| Science and engineering | 0 / 10 | 10 / 10 |
| Life sciences and medicine | 10 / 20 | 15 / 20 |
| Humanities and general knowledge | 15 / 40 | 20 / 40 |
Visual aestheticsSubscores
| Scoring dimension | Gemini 3.8 Flashdefault | GPT-6 Lunaxhigh |
|---|---|---|
| Composition | 19 / 20 | 19 / 20 |
| Spacing and alignment | 17 / 20 | 16 / 20 |
| Typography and expression | 16 / 20 | 17 / 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 3.8 Flashdefault | GPT-6 Lunaxhigh |
|---|---|---|
| Semantic clarity | 15 / 20 | 15 / 20 |
| Control-flow organization | 20 / 20 | 20 / 20 |
| Locality of changes | 15 / 20 | 15 / 20 |
| State and lifecycle | 17 / 20 | 18 / 20 |
| Implementation economy | 17 / 20 | 16 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.