In plain words: A single model takes point clouds, images, or text and turns them into editable 3D CAD models, first learning from generated examples and then improving through trial-and-error feedback. It beat single-input methods on all three input types and set best results on three datasets.
Abstract · cadrille: Multi-modal CAD Reconstruction with Reinforcement Learning
Computer-Aided Design (CAD) plays a central role in engineering and manufacturing, making it possible to create precise and editable 3D models. Using a variety of sensor or user-provided data as inputs for CAD reconstruction can democratize access to design applications. However, existing methods typically focus on a single input modality, such as point clouds, images, or text, which limits their generalizability and robustness. Leveraging recent advances in vision-language models (VLM), we propose a multi-modal CAD reconstruction model that simultaneously processes all three input modalities. Inspired by large language model (LLM) training paradigms, we adopt a two-stage pipeline: supervised fine-tuning (SFT) on large-scale procedurally generated data, followed by reinforcement learning (RL) fine-tuning using online feedback, obtained programatically. Furthermore, we are the first to explore RL fine-tuning of LLMs for CAD tasks demonstrating that online RL algorithms such as Group Relative Preference Optimization (GRPO) outperform offline alternatives. In the DeepCAD benchmark, our SFT model outperforms existing single-modal approaches in all three input modalities simultaneously. More importantly, after RL fine-tuning, cadrille sets new state-of-the-art on three challenging datasets, including a real-world one. Code is avaliable at https://github.com/col14m/cadrille .
Maksim Kolodiazhnyi, Denis Tarasov, Dmitrii Zhemchuzhnikov, Alexander Nikulin, Ilya Zisman, Anna Vorontsova, Anton Konushin, Vladislav Kurenkov, Danila Rukhovich
arXiv:2505.22914 · cs.CV, cs.LG · submitted May 28, 2025 · updated Feb 17, 2026
abstract · pdf · html · ICLR 2026 (Oral)
x-thread: https://x.com/vladkurenkov/status/1929594134370619480 github: https://github.com/col14m/cadrille weights: https://huggingface.co/maksimko123/cadrille-rl