Model comparison
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Differences vs. claude-fable-5-1 · max
Score, cost & time differences
Current baseline · claude-fable-5-1 · max
91Frontend interaction
Compared with claude-fable-5-1 · max
- k3.1-pro · max
Frontend interaction: tiedReference cost $0.75 ($5.93 less)Evaluation time 21m 13s (4m 57s less)
Differences reflect these evaluation tasks. Cost and time cover the same dimension, not a typical conversation. Scoring & cost notes
| Metric | claude-fable-5-1 · max | k3.1-pro · max |
|---|---|---|
| Frontend interaction | claude-fable-5-1max 91 | k3.1-promax 91Tied |
| Overall | claude-fable-5-1max 87.25 | k3.1-promax 79.60−7.65 pts |
| Backend engineering | claude-fable-5-1max 85 | k3.1-promax 84−1 pts |
| Knowledge & Reasoning | claude-fable-5-1max 95 | k3.1-promax 80−15 pts |
| Visual aesthetics | claude-fable-5-1max 80 | k3.1-promax 68−12 pts |
| Maintainability | claude-fable-5-1max 68 | k3.1-promax 64−4 pts |
Frontend interaction evaluation · Evaluation consumption, not a monthly subscription fee
Cost & time
Frontend interaction evaluation| Metric | claude-fable-5-1 · max | k3.1-pro · max |
|---|---|---|
| Reference cost | claude-fable-5-1max $6.68 | k3.1-promax $0.75−$5.93 |
| Evaluation time | claude-fable-5-1max 26m 10s | k3.1-promax 21m 13s−18.9% |
Capability profiles
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Behind each score
Expand to inspect each subaxis.
Backend engineeringSubscores
| Scoring dimension | claude-fable-5-1max | k3.1-promax |
|---|---|---|
| Contracts and boundaries | 13 / 20 | 16 / 20 |
| Retries and failures | 20 / 20 | 18 / 20 |
| CI and adversarial review | 14 / 20 | 13 / 20 |
| Transactions and consistency | 19 / 20 | 19 / 20 |
| Caching and regression | 19 / 20 | 18 / 20 |
Frontend interactionSubscores
| Scoring dimension | claude-fable-5-1max | k3.1-promax |
|---|---|---|
| Layout and adaptation | 20 / 20 | 20 / 20 |
| Interaction behavior | 20 / 20 | 20 / 20 |
| State continuity | 15 / 20 | 15 / 20 |
| Accessibility and feedback | 13 / 15 | 15 / 15 |
| State validation and regression | 23 / 25 | 21 / 25 |
Knowledge & ReasoningSubscores
| Scoring dimension | claude-fable-5-1max | k3.1-promax |
|---|---|---|
| Mathematical reasoning | 15 / 15 | 15 / 15 |
| Computer science & AI | 10 / 15 | 5 / 15 |
| Science and engineering | 10 / 10 | 10 / 10 |
| Life sciences and medicine | 20 / 20 | 15 / 20 |
| Humanities and general knowledge | 40 / 40 | 35 / 40 |
Visual aestheticsSubscores
| Scoring dimension | claude-fable-5-1max | k3.1-promax |
|---|---|---|
| Composition | 20 / 20 | 20 / 20 |
| Spacing and alignment | 18 / 20 | 15 / 20 |
| Typography and expression | 19 / 20 | 16 / 20 |
| Color and surfaces | 19 / 20 | 20 / 20 |
| Control styling | 17 / 20 | 17 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.
MaintainabilitySubscores
| Scoring dimension | claude-fable-5-1max | k3.1-promax |
|---|---|---|
| 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 | 19 / 20 | 17 / 20 |
Subscores retain their original scale; the axis score uses a consistent conversion.