Add model card

README.md

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-This repo contains models trained using [LongDPO](https://arxiv.org/abs/2502.02095)
+---
+library_name: transformers
+pipeline_tag: text-generation
+---
+
+The long-form instruction model introduced in [LongDPO](https://huggingface.co/papers/2502.02095) to improve long-form generation abilities.