Molmo2: Open Weights and Data for Vision-Language Models with Video Understanding and Grounding

Christopher Clark*^♥, Jieyu Zhang*^♥, Zixian Ma*^♥, Jae Sung Park^♥, Mohammadreza Salehi^♥, Rohun Tripathi^♥, Sangho Lee^♥, Jason Ren, Chris Dongjoo Kim, Yinuo Yang, Vincent Shao, Yue Yang, Weikai Huang, Ziqi Gao, Taira Anderson, Jianrui Zhang, Jitesh Jain, George Stoica, Winston Han, Ali Farhadi, Ranjay Krishna. (*equal contribution, ^♥core contributor)

Technical Report, 2025.

blog report models data playground

SAGE: Training Smart Any-Horizon Agents for Long Video Reasoning with Reinforcement Learning

Jitesh Jain, Jialuo Li, Zixian Ma, Jieyu Zhang, Chris Dongjoo Kim, Sangho Lee, Rohun Tripathi, Tanmay Gupta, Christopher Clark^ and Humphrey Shi^ (^: equal advising)

Conference on Computer Vision and Pattern Recognition (CVPR), 2026.

paper project page code models & data

ReSpec: Relevance and Specificity Grounded Online Filtering for Learning on Video-Text Data Streams

Chris Dongjoo Kim*, Jihwan Moon*, Sangwoo Moon, Heeseung Yun, Sihaeng Lee, Aniruddha Kembhavi, Soonyoung Lee, Gunhee Kim, Sangho Lee, and Christopher Clark. (*equal contribution)

Conference on Computer Vision and Pattern Recognition (CVPR), 2025.

paper code

Sample Selection via Contrastive Fragmentation for Noisy Label Regression

Chris Dongjoo Kim*, Sangwoo Moon*, Jihwan Moon, Dongyeon Woo and Gunhee Kim (*equal contribution)

Conference on Neural Information Processing Systems (NeurIPS), 2024.

paper code

Continual Learning on Noisy Data Streams via Self-Purified Replay

Chris Dongjoo Kim*, Jinseo Jeong*, Sangwoo Moon and Gunhee Kim (*equal contribution)

International Conference on Computer Vision (ICCV), 2021.

paper code

Imbalanced Continual Learning with Partitioning Reservoir Sampling

Chris Dongjoo Kim, Jinseo Jeong and Gunhee Kim

European Conference on Computer Vision (ECCV), 2020.

paper code

Variational Laplace Autoencoders

Yookoon Park, Chris Dongjoo Kim and Gunhee Kim

International Conference on Machine Learning (ICML), 2019.

paper code

AudioCaps: Generating Captions for Audios in The Wild

Chris Dongjoo Kim, Byeongchang Kim, Hyunmin Lee and Gunhee Kim

North American Chapter of the Association for Computational Linguistics (NAACL), 2019. 🏆 Oral presentation.

project page paper code & dataset

Video Question Answering with Spatio-Temporal Reasoning

Yunseok Jang, Yale Song, Chris Dongjoo Kim, Youngjae Yu, Youngjin Kim and Gunhee Kim

International Journal of Computer Vision (IJCV), 2019.

paper code

Generative Adversarial Parallelization

Jiwoong Im, He Ma, Chris Dongjoo Kim, Graham Taylor

Preprint, 2017.

paper

Generating Images with Recurrent Adversarial Networks

Jiwoong Im, Chris Dongjoo Kim, Hui Jiang and Roland Memisevic

Preprint, 2016.

paper