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, marking a significant milestone as the first fully open-sourced industrial-grade 3D generation model. This move cements the company's position at the forefront of the industry.
The Hunyuan 3D model has garnered global recognition, with its downloads on the renowned open-source community and technology platform, Hugging Face, surpassing 1.8 million. The upgraded Hunyuan 3D2.1 model boasts remarkable enhancements in performance. By uploading a picture of a jewelry box, the model generates a 3D version with crisp textures, delicate material quality, and consistent lighting. This new model is poised to revolutionize the creation of 3D characters, props, and product models in gaming, film, and online commerce.
In comparison to its predecessor, Hunyuan 3D2.0, the new model has refined the quality of geometric generation and introduced a large-scale model for generating Physically-Based Rendering (PBR) materials. This advancement elevates the texture and lighting performance of 3D assets, bidding farewell to the "plastic" look. Geometry, akin to the "skeleton" of a 3D model, dictates form, outline, and detail precision, while textures, the "skin," replicate surface colors, gloss, and details. The new model optimizes detail modeling with higher mesh accuracy and better topological consistency, laying the groundwork for fundamental texture mapping and enabling the generation of various maps that support high-quality rendering of complex materials.
PBR technology simulates the physical interaction between light and materials, enhancing the visual consistency of models across different lighting conditions. In blind user tests, the PBR textures of Hunyuan 3D2.1 outperformed others with a staggering 78% win rate. This level of physical realism not only meets the high demands of rendering scenarios in movies and games but also provides reliable 3D assets for industrial design, virtual simulation, and digital twins, blending aesthetics with practicality.
Beyond the upgrade in effects, the Hunyuan 3D2.1 model also lowers the barrier to development. With its full-chain open-sourcing, including 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, enabling personal computers to run it. Detailed deployment and usage tutorials are available on open-source platforms like Github, facilitating easy adoption by enterprises, small to medium teams, and individual developers.
For those eager to explore the capabilities of Hunyuan 3D2.1, the open-source URL is https://3d-models.hunyuan.tencent.com/, and to experience the model firsthand, visit https://3d.hunyuan.tencent.com/.