Update model card

README.md

@@ -16,7 +16,7 @@ Sapiens2 is a family of high-resolution vision transformers pretrained on **1 bi
 
 This is the **index** repository: each variant lives in its own model repo (linked below).
 
-- 📄 **Paper:** [OpenReview (ICLR 2026)](https://openreview.net/pdf?id=IVAlYCqdvW)
+- 📄 **Paper:** [arXiv:2604.21681](https://arxiv.org/pdf/2604.21681)
 - 🌐 **Project Page:** [rawalkhirodkar.github.io/sapiens2](https://rawalkhirodkar.github.io/sapiens2)
 - 💻 **Code:** [github.com/facebookresearch/sapiens2](https://github.com/facebookresearch/sapiens2)
 - 📚 **Collection:** [Sapiens2 on HuggingFace](https://huggingface.co/collections/facebook/sapiens2)
@@ -29,6 +29,7 @@ This is the **index** repository: each variant lives in its own model repo (link
 | Sapiens2-0.4B | 0.398 B | [facebook/sapiens2-pretrain-0.4b](https://huggingface.co/facebook/sapiens2-pretrain-0.4b) |
 | Sapiens2-0.8B | 0.818 B | [facebook/sapiens2-pretrain-0.8b](https://huggingface.co/facebook/sapiens2-pretrain-0.8b) |
 | Sapiens2-1B | 1.462 B | [facebook/sapiens2-pretrain-1b](https://huggingface.co/facebook/sapiens2-pretrain-1b) |
+| Sapiens2-1B (4K) | 1.607 B | [facebook/sapiens2-pretrain-1b-4k](https://huggingface.co/facebook/sapiens2-pretrain-1b-4k) |
 | Sapiens2-5B | 5.071 B | [facebook/sapiens2-pretrain-5b](https://huggingface.co/facebook/sapiens2-pretrain-5b) |
 
 ## Task Checkpoints
@@ -76,10 +77,10 @@ Released under the [Sapiens2 License](https://github.com/facebookresearch/sapien
 ## Citation
 
 ```bibtex
-@inproceedings{khirodkar2026sapiens2,
+@article{khirodkarsapiens2,
   title={Sapiens2},
-  author={Khirodkar, Rawal and Wen, He and Martinez, Julieta and Dong, Yuan and Zhaoen, Su and Saito, Shunsuke},
-  booktitle={International Conference on Learning Representations (ICLR)},
+  author={Khirodkar, Rawal and Wen, He and Martinez, Julieta and Dong, Yuan and Su, Zhaoen and Saito, Shunsuke},
+  journal={arXiv preprint arXiv:2604.21681},
   year={2026}
 }
 ```