FailureScope Single-Turn Corpus (NeurIPS 2026 E&D)

FailureScope single-turn corpus: 2,664 tasks pooled from GSM8K, ARC-Challenge, MMLU, HumanEval, MBPP, and IFEval, evaluated across 18 language models (1.3B to 70B+ parameters). Each record contains the task prompt, source benchmark, gold answer, per-model pass/fail labels, taxonomy assignment, and the leave-one-model-out (LOMO) clustering cluster ID. Released to support reproducible cross-model behavioral diagnosis. This dataset is one of three components of the FailureScope release (single-turn, multi-turn, adversarial); see related identifiers on the umbrella record DOI 10.5281/zenodo.20037167. Companion Croissant 1.0 metadata file is bundled with the FailureScope Croissant package on the umbrella record. Usage and field schema are documented in the included README and the paper appendix.