This repository hosts the released LLM checkpoint for LongVideoAgent, a multi-agent framework for long-video question answering. This model is a Qwen2.5-3B-based checkpoint used in the LongVideoAgent project.

Project links:

Project page: https://longvideoagent.github.io/
Code: https://github.com/longvideoagent/LongVideoAgent
Paper: https://arxiv.org/abs/2512.20618

Overview

LongVideoAgent decomposes long-video reasoning into multiple roles:

MasterAgent for planning and answer generation
GroundingAgent for subtitle-based temporal grounding
VisionAgent for local visual evidence extraction

This checkpoint is intended for use with the official LongVideoAgent codebase and evaluation pipeline.

Intended Use

Use this model for:

Research on long-video question answering
Reproducing LongVideoAgent experiments
Studying agentic reasoning over long videos

This checkpoint is not a general-purpose video model by itself. For inference and evaluation, please use the official repository:

https://github.com/longvideoagent/LongVideoAgent

Usage

Please follow the setup and inference instructions in the official repository and project documentation:

If you use this checkpoint in your work, please also cite the LongVideoAgent paper below.

Limitations

This model is designed for the LongVideoAgent framework rather than standalone chat usage.
Performance depends on the full multi-agent pipeline, including grounding and visual evidence modules.
The model may inherit limitations from the base model and training data.

Citation

bibtex

@misc{liu2025longvideoagentmultiagentreasoninglong,
  title={LongVideoAgent: Multi-Agent Reasoning with Long Videos},
  author={Runtao Liu and Ziyi Liu and Jiaqi Tang and Yue Ma and Renjie Pi and Jipeng Zhang and Qifeng Chen},
  year={2025},
  eprint={2512.20618},
  archivePrefix={arXiv},
  primaryClass={cs.AI},
  url={https://arxiv.org/abs/2512.20618},
}

Acknowledgement

This checkpoint is built for the LongVideoAgent project and is based on Qwen2.5-3B.

longvideoagent/longvideoagent-qwen2.5-3b

LongVideoAgent Qwen2.5-3B