---
tags:
  - world-model
  - video-generation
  - camera-control
  - long-horizon-video
  - wan2.2
library_name: pytorch
---

<div align="center">

# SolarWM-Wan2.2-5B

### Wan2.2 TI2V-5B checkpoints for SolarWM

[Project Page](https://junchao-cs.github.io/SolarWM-Web/) · [GitHub](https://github.com/Junchao-cs/SolarWM) · [SolarWM Collection](https://huggingface.co/collections/junchaoh-cs/solarwm-6a992c9d76d85c29637c9111) · [Dataset](https://huggingface.co/datasets/junchaoh-cs/SolarWM-Data) · [Paper](https://arxiv.org/abs/2609.02886)

</div>

SolarWM is an open foundation for building interactive video world models from data preparation through scalable training and long-horizon inference. This repository contains only the **Wan2.2 TI2V-5B family**, so users do not need to download the 14B, LTX-22B, or H3-33B releases.

## Checkpoints

| Directory | Stage | Frames | Release contents |
|---|---:|---:|---|
| `SolarWM-5B-base` | Base | — | Base model and runtime assets |
| `SolarWM-5B-bid-stage0p5-81f` | Stage0.5 | 81 | Bidirectional camera-conditioned checkpoint |
| `SolarWM-5B-bid-stage0p5-153f` | Stage0.5 | 153 | Longer-context bidirectional checkpoint |
| `SolarWM-5B-tf-stage1-81f` | Stage1 | 81 | Teacher-forced AnyFlow checkpoint |
| `SolarWM-5B-sgf-stage2-81f` | Stage2 | 81 | Few-step causal SGF checkpoint |

## Download

```bash
hf download junchaoh-cs/SolarWM-Wan2.2-5B --local-dir ./SolarWM-models
```

To download one checkpoint only:

```bash
hf download junchaoh-cs/SolarWM-Wan2.2-5B \
  --include "SolarWM-5B-sgf-stage2-81f/*" \
  --local-dir ./SolarWM-models
```

Keep the directory layout unchanged. SolarWM configurations resolve the base and staged checkpoint paths from these release directories.

## Inference

Install SolarWM from the [source repository](https://github.com/Junchao-cs/SolarWM), activate the Wan runtime environment, and follow the [Wan2.2 TI2V-5B guide](https://github.com/Junchao-cs/SolarWM/blob/main/docs/backends/wan22-ti2v-5b.md). For Stage2 inference, set:

```text
model.base_path=/path/to/SolarWM-models/SolarWM-5B-base
checkpoint.path=/path/to/SolarWM-models/SolarWM-5B-sgf-stage2-81f
```

## License

SolarWM code is released under Apache-2.0. Model weights and bundled backbone assets remain subject to the license and notices included in each release directory; they are not relicensed by SolarWM.

## Citation

```bibtex
@misc{huang2026solarwmopendatascalable,
      title={SolarWM: Open Data and Scalable Training for Long-Horizon Video World Models},
      author={Junchao Huang and Guian Fang and Shengju Qian and Xianghao Kong and Zhuoran Zhao and Wei Huang and Yihua Du and Zixin Zhang and Justin Cui and Yuchao Gu and Yukang Chen and Xinting Hu and Tianyu He and Shaoshuai Shi and Zhuotao Tian and Xin Wang and Mike Zheng Shou and Li Jiang},
      year={2026},
      eprint={2609.02886},
      archivePrefix={arXiv},
      primaryClass={cs.CV},
      url={https://arxiv.org/abs/2609.02886}
}
```