P

weft · Production library run 1

30.6Library score
Pass rate66.0%
Simplicity53.7
Problems $$17.63

Implementers use the real production library (chumsky).

ImplementerPass rateSimplicityCostScore
DeepSeek V4.1 Flash · mini-SWE46.5%49.5$1.96
21.6
GLM 5.3 Flash · mini-SWE71.6%54.9$12.18
30.7
GPT-5.6 Luna · Codex79.9%56.6$3.50
39.4
ProblemDeepSeek V4.1 FlashGLM 5.3 FlashGPT-5.6 LunaMean
bag-rules0.041.131.424.2ninja-build27.46.830.321.5mail-addresses1.039.555.932.1property-paths0.129.548.025.9formula-ledger24.326.721.724.2record-spans63.311.177.150.5block-events62.154.465.060.5command-errors0.024.68.311.0route-tags56.051.551.052.8template-audit0.037.347.628.3grammar-inventory25.611.130.422.4grammar-trace42.053.146.447.2nesting-guard0.030.610.713.8unicode-spans0.011.828.313.4