Model comparison
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Differences vs. k3.1-pro · max
Score, cost & time differences
Current baseline · k3.1-pro · max
91Frontend interaction
Compared with k3.1-pro · max
- claude-fable-5-1 · max
Frontend interaction: tiedReference cost $6.68 ($5.93 more)Evaluation time 26m 10s (4m 57s more)
Differences reflect these evaluation tasks. Cost and time cover the same dimension, not a typical conversation. Scoring & cost notes
| Metric | k3.1-pro · max | claude-fable-5-1 · max |
|---|---|---|
| Frontend interaction | k3.1-promax 91 | claude-fable-5-1max 91Tied |
| Overall | k3.1-promax 79.60 | claude-fable-5-1max 87.25+7.65 pts |
| Backend engineering | k3.1-promax 84 | claude-fable-5-1max 85+1 pts |
| Knowledge & Reasoning | k3.1-promax 80 | claude-fable-5-1max 95+15 pts |
| Visual aesthetics | k3.1-promax 68 | claude-fable-5-1max 80+12 pts |
| Maintainability | k3.1-promax 64 | claude-fable-5-1max 68+4 pts |
Frontend interaction evaluation · Evaluation consumption, not a monthly subscription fee
Cost & time
Frontend interaction evaluation| Metric | k3.1-pro · max | claude-fable-5-1 · max |
|---|---|---|
| Reference cost | k3.1-promax $0.75 | claude-fable-5-1max $6.68+$5.93 |
| Evaluation time | k3.1-promax 21m 13s | claude-fable-5-1max 26m 10s+23.4% |
Capability profiles
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Behind each score
Expand to inspect each subaxis.
Backend engineeringSubscores
| Scoring dimension | k3.1-promax | claude-fable-5-1max |
|---|---|---|
| Contracts and boundaries | 16 / 20 | 13 / 20 |
| Retries and failures | 18 / 20 | 20 / 20 |
| CI and adversarial review | 13 / 20 | 14 / 20 |
| Transactions and consistency | 19 / 20 | 19 / 20 |
| Caching and regression | 18 / 20 | 19 / 20 |
Frontend interactionSubscores
| Scoring dimension | k3.1-promax | claude-fable-5-1max |
|---|---|---|
| Layout and adaptation | 20 / 20 | 20 / 20 |
| Interaction behavior | 20 / 20 | 20 / 20 |
| State continuity | 15 / 20 | 15 / 20 |
| Accessibility and feedback | 15 / 15 | 13 / 15 |
| State validation and regression | 21 / 25 | 23 / 25 |
Knowledge & ReasoningSubscores
| Scoring dimension | k3.1-promax | claude-fable-5-1max |
|---|---|---|
| Mathematical reasoning | 15 / 15 | 15 / 15 |
| Computer science & AI | 5 / 15 | 10 / 15 |
| Science and engineering | 10 / 10 | 10 / 10 |
| Life sciences and medicine | 15 / 20 | 20 / 20 |
| Humanities and general knowledge | 35 / 40 | 40 / 40 |
Visual aestheticsSubscores
| Scoring dimension | k3.1-promax | claude-fable-5-1max |
|---|---|---|
| Composition | 20 / 20 | 20 / 20 |
| Spacing and alignment | 15 / 20 | 18 / 20 |
| Typography and expression | 16 / 20 | 19 / 20 |
| Color and surfaces | 20 / 20 | 19 / 20 |
| Control styling | 17 / 20 | 17 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.
MaintainabilitySubscores
| Scoring dimension | k3.1-promax | claude-fable-5-1max |
|---|---|---|
| Semantic clarity | 16 / 20 | 16 / 20 |
| Control-flow organization | 20 / 20 | 20 / 20 |
| Locality of changes | 15 / 20 | 15 / 20 |
| State and lifecycle | 18 / 20 | 18 / 20 |
| Implementation economy | 17 / 20 | 19 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.