| title | QuoteBench: How Matched Scores Can Hide Command-Path Failures |
|---|---|
| authors | Shangao Li, Yao Zhang, Volker Tresp, Yuanyuan Yang |
| date | 2026-08-13 |
| venue | arXiv (preprint, not peer reviewed) |
| id | arXiv:2608.13547 |
| upvotes | 3 (Hugging Face Daily Papers, 2026-11-01) |
| links | abs pdf hf code |
| abstract | LLM coding agents issue Bash commands through interfaces that may serialize, wrap, and reparse model output. Matched execution scores alone cannot distinguish command-generation errors from failures introduced after generation. QuoteBench measures this boundary with exact final-state validation on 56 one-shot tasks from 14 incident-derived families, crossing the generation contract with the execution transport around one deliberately unescaped added parser. Escaping at the interpolation point reproduces each replayed reply's raw-path outcome, so any recovery under a disclosed boundary must come from the model changing its generation. Across eight same-window configurations, replaying the same reply through the added parser lowers success by 55.4 to 73.2 percentage points; disclosure recovers 30.4 to 60.7 points for six configurations, and zero or slightly negative for the other two. Raw generation is nearly saturated at the frontier; boundary adaptation is what still separates models. GPT-5.6-sol's matched gap of -3.6 points hides -64.3 points of damage and +60.7 points of compensation. The deployment configuration reorders models: one reversal among 26 comparable pairs is unambiguous and four more sit on single-task margins. Evaluations of command-issuing agents should report the model configuration, generation contract, execution path, operating point, and final-state validator rather than treat a matched score as an intrinsic model property. |
cite
@misc{li2026quotebench,
title={QuoteBench: How Matched Scores Can Hide Command-Path Failures},
author={Shangao Li and Yao Zhang and Volker Tresp and Yuanyuan Yang},
year={2026},
eprint={2608.13547},
archivePrefix={arXiv},
url={https://arxiv.org/abs/2608.13547}
}