LibraryDesignBench Simplicity
Code
Task-weighted simplicity of downstream code written using the designed library, measured against reference solutions using production libraries. The benchmark evaluates downstream implementation simplicity rather than library code size.
Top models (higher is better)
| Model | Score |
|---|---|
| Claude Opus 5.5 | 64.5 |
| Claude Fable 5.1 | 62.7 |
| GPT-6 Astra | 58.7 |
| Kimi K3 | 58.6 |
| GLM-5.3 | 57.1 |
| Grok 4.6 | 54.1 |
| GPT-5.6 Sol | 52.9 |
| GPT-6 Sol | 51.6 |