At the prestigious CVPR2025, a leading conference in the field of computer vision, Tencent made a groundbreaking announcement: the open-sourcing of their Hunyuan 3D2.1 model, the first industrial-grade 3D generation model with a fully open link. This marks a significant milestone in the industry, positioning Tencent at the forefront of 3D technology development.

The Hunyuan 3D model has already garnered global recognition, with over 1.8 million downloads on Hugging Face, a renowned open-source community and tech platform. The upgraded Hunyuan 3D2.1 model boasts remarkable improvements in performance. By uploading an image of a jewelry box, the model generates a 3D jewelry box with clear textures, delicate texture, and consistent lighting. This new model has vast applications across various fields, including gaming, movies, and online shopping, enabling the creation of 3D character models, props, and product models.

Compared to its predecessor, Hunyuan 3D2.0, the new model enhances the quality of geometric generation and introduces a PBR (Physically-Based Rendering) material generation model. This elevates the texture and lighting performance of 3D assets, bidding farewell to the "plastic" look. Geometry serves as the "skeleton" of 3D models, determining form, outline, and detail precision, while texture acts as the "skin," replicating surface color, luster, and details. The new model optimizes detail modeling, offering higher mesh accuracy and better topology consistency. This lays the foundation for basic texture mapping and enables the generation of various maps, supporting high-quality rendering of complex materials.

PBR technology simulates the physical interaction between light and materials, enhancing the visual consistency of models under different lighting conditions. In user blind tests, the PBR texture quality of Hunyuan 3D2.1 models has an impressive win rate of 78%. This level of physical realism not only meets the high demands of rendering scenes in movies and games but also provides reliable 3D assets for industrial design, virtual simulation, and digital twins. It combines aesthetics with practicality.

In addition to the performance upgrade, the development threshold has also been lowered. The Hunyuan 3D2.1 model is fully open-sourced, covering model weights, training code, and data processing procedures. Developers can freely fine-tune, retrain, or optimize the model to meet customized needs and provide a platform for academic research. Moreover, the model is deployment-friendly, compatible with consumer-grade graphics cards, and can be run on personal computers. Detailed deployment and usage tutorials are provided on open-source platforms like Github, making it easy for enterprises, small and medium-sized teams, and individual developers to get started.

To explore the power of Hunyuan 3D2.1 and experience its capabilities, visit the following links:

Open-source URL: https://3d-models.hunyuan.tencent.com/

Experience URL: https://3d.hunyuan.tencent.com/