@article{justenoughthinkingefficientreasoningwith, title = {Just Enough Thinking: Efficient Reasoning with Adaptive Length Penalties Reinforcement Learning}, author = {Violet Xiang and Chase Blagden and Rafael Rafailov and Nathan Lile and Sang Truong and Chelsea Finn and Nick Haber}, year = {2025}, eprint = {2506.05256}, archivePrefix = {arXiv}, url = {https://arxiv.org/abs/2506.05256v1}, }