On the Interplay of Pre-Training, Mid-Training, and RL on Reasoning Language Models
Paper • 2512.07783 • Published • 39
This repository is organized by context-mixture setting. Each top-level directory corresponds to one pretraining setting used in the context experiments.
Within each setting:
base/ stores the final pretraining checkpoint used to initialize RL.rl/ stores the final RL checkpoints for each experiment variant.Only inference-relevant Hugging Face files are included.
idzoo_0.9zoo_0.1teacheridzoo_0.99zoo_0.01teacheridzoo_0.999zoo_0.001teacherfrom transformers import AutoModelForCausalLM, AutoTokenizer
repo_id = "Interplay-LM-Reasoning/context_pretrain"
subdir = "idzoo_0.99zoo_0.01teacher/rl/contextzoo_0.99zoo_0.01teacher_process_strict"
tokenizer = AutoTokenizer.from_pretrained(repo_id, subfolder=subdir)
model = AutoModelForCausalLM.from_pretrained(repo_id, subfolder=subdir)
@misc{zhang2025interplaypretrainingmidtrainingrl,
title={On the Interplay of Pre-Training, Mid-Training, and RL on Reasoning Language Models},
author={Charlie Zhang and Graham Neubig and Xiang Yue},
year={2025},
eprint={2512.07783},
archivePrefix={arXiv},
primaryClass={cs.CL},
url={https://arxiv.org/abs/2512.07783},
}