OmniPhys: A Unified Multimodal Benchmark for Physics Understanding and Generation from Chinese Educational Corpora

Hao Chen, Yumin Lin, Nadila Yushanjiang, Xin Lin, Min Zhang


Abstract
Multimodal Large Language Models (MLLMs) have demonstrated strong abilities in solving diverse visual and textual reasoning tasks. However, their development in the physics domain is significantly hindered by the lack of a comprehensive benchmark. To fill this gap, we introduce OmniPhys, a large-scale benchmark for multimodal physics understanding and reasoning, covering middle school through university-level problems from Chinese Educational Corpora. OmniPhys consists of 15,246 questions and 19,850 images, accompanied by detailed annotations that support fine-grained analysis of reasoning processes and knowledge usage. Beyond conventional evaluation, OmniPhys is a benchmark that systematically evaluates multimodal outputs in physics domain, including models’ ability to generate structured physics diagrams, which constitute a fundamental component of authentic physics problem solving.
Anthology ID:
2026.findings-emnlp.1801
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2026
Month:
October
Year:
2026
Address:
Budapest, Hungary
Editors:
Hung-Yi Lee, Sunipa Dev, Jessy Li, Desmond Elliott
Venue:
Findings
SIG:
SIGDAT
Publisher:
Association for Computational Linguistics
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Pages:
38481–38498
Language:
URL:
https://aclanthology.org/2026.findings-emnlp.1801/
DOI:
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Cite (ACL):
Hao Chen, Yumin Lin, Nadila Yushanjiang, Xin Lin, and Min Zhang. 2026. OmniPhys: A Unified Multimodal Benchmark for Physics Understanding and Generation from Chinese Educational Corpora. In Findings of the Association for Computational Linguistics: EMNLP 2026, pages 38481–38498, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):
OmniPhys: A Unified Multimodal Benchmark for Physics Understanding and Generation from Chinese Educational Corpora (Chen et al., Findings 2026)
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PDF:
https://aclanthology.org/2026.findings-emnlp.1801.pdf