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Main Authors: Chen, Chen, Hu, ZeYang, Chen, Fengjiao, Ma, Liya, Liu, Jiaxing, Li, Xiaoyu, Wang, Ziwen, Cao, Xuezhi, Cai, Xunliang
Format: Preprint
Published: 2025
Subjects:
Online Access:https://arxiv.org/abs/2510.18915
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author Chen, Chen
Hu, ZeYang
Chen, Fengjiao
Ma, Liya
Liu, Jiaxing
Li, Xiaoyu
Wang, Ziwen
Cao, Xuezhi
Cai, Xunliang
author_facet Chen, Chen
Hu, ZeYang
Chen, Fengjiao
Ma, Liya
Liu, Jiaxing
Li, Xiaoyu
Wang, Ziwen
Cao, Xuezhi
Cai, Xunliang
contents Multimodal Large Languages models have been progressing from uni-modal understanding toward unifying visual, audio and language modalities, collectively termed omni models. However, the correlation between uni-modal and omni-modal remains unclear, which requires comprehensive evaluation to drive omni model's intelligence evolution. In this work, we introduce a novel, high-quality, and UNified Omni model benchmark, UNO-Bench. This benchmark is designed to effectively evaluate both UNi-modal and Omni-modal capabilities under a unified ability taxonomy, spanning 44 task types and 5 modality combinations. It includes 1250 human curated samples for omni-modal with 98% cross-modality solvability, and 2480 enhanced uni-modal samples. The human-generated dataset is well-suited to real-world scenarios, particularly within the Chinese context, whereas the automatically compressed dataset offers a 90% increase in speed and maintains 98% consistency across 18 public benchmarks. In addition to traditional multi-choice questions, we propose an innovative multi-step open-ended question format to assess complex reasoning. A general scoring model is incorporated, supporting 6 question types for automated evaluation with 95% accuracy. Experimental result shows the Compositional Law between omni-modal and uni-modal performance and the omni-modal capability manifests as a bottleneck effect on weak models, while exhibiting synergistic promotion on strong models.
format Preprint
id arxiv_https___arxiv_org_abs_2510_18915
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle UNO-Bench: A Unified Benchmark for Exploring the Compositional Law Between Uni-modal and Omni-modal in Omni Models
Chen, Chen
Hu, ZeYang
Chen, Fengjiao
Ma, Liya
Liu, Jiaxing
Li, Xiaoyu
Wang, Ziwen
Cao, Xuezhi
Cai, Xunliang
Computation and Language
Artificial Intelligence
I.2.7
Multimodal Large Languages models have been progressing from uni-modal understanding toward unifying visual, audio and language modalities, collectively termed omni models. However, the correlation between uni-modal and omni-modal remains unclear, which requires comprehensive evaluation to drive omni model's intelligence evolution. In this work, we introduce a novel, high-quality, and UNified Omni model benchmark, UNO-Bench. This benchmark is designed to effectively evaluate both UNi-modal and Omni-modal capabilities under a unified ability taxonomy, spanning 44 task types and 5 modality combinations. It includes 1250 human curated samples for omni-modal with 98% cross-modality solvability, and 2480 enhanced uni-modal samples. The human-generated dataset is well-suited to real-world scenarios, particularly within the Chinese context, whereas the automatically compressed dataset offers a 90% increase in speed and maintains 98% consistency across 18 public benchmarks. In addition to traditional multi-choice questions, we propose an innovative multi-step open-ended question format to assess complex reasoning. A general scoring model is incorporated, supporting 6 question types for automated evaluation with 95% accuracy. Experimental result shows the Compositional Law between omni-modal and uni-modal performance and the omni-modal capability manifests as a bottleneck effect on weak models, while exhibiting synergistic promotion on strong models.
title UNO-Bench: A Unified Benchmark for Exploring the Compositional Law Between Uni-modal and Omni-modal in Omni Models
topic Computation and Language
Artificial Intelligence
I.2.7
url https://arxiv.org/abs/2510.18915