Tencent Hunyuan Lab just dropped a bombshell: Hunyuan3D-Part. This open-source, part-level 3D generation model outperforms all known open/closed-source solutions in controllability and generation quality.

Key breakthroughs include:

1. P3-SAM: The industry's first native 3D part segmentation model, completely ditching the crutch of 2D SAM

2. X-Part: Trained on 3.7 million annotated 3D models, delivering visibly cleaner generation results

3. A fully automated 3D segmentation pipeline that decomposes complex structures without human intervention

Tech enthusiasts will notice two critical details:

- Zero reliance on 2D SAM during training, relying solely on 3D data

- Innovative combination of geometric features and semantic cues for part decomposition

Practical usage is even simpler: The official website offers a lightweight demo (Hugging Face) and the full-featured Hunyuan3D Studio. Non-technical creators can drag-and-drop to operate, with generated results supporting industrial design essentials like symmetrical mirroring.

Open-source address: https://github.com/Tencent-Hunyuan/Hunyuan3D-Part

Technical reports:

- P3-SAM paper: https://arxiv.org/abs/2509.06784

- X-Part paper: https://arxiv.org/abs/2509.08643

(Note: Some users report strict licensing terms—recommend thorough review before commercial use.)