@article{knowingwhennottoanswerevaluatingabstenti,
  title = {Knowing When Not to Answer: Evaluating Abstention in Multimodal Reasoning Systems},
  author = {Nishanth Madhusudhan and Vikas Yadav and Alexandre Lacoste},
  year = {2026},
  eprint = {2604.14799},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2604.14799},
}