Hunyuan3D-2.1
Hunyuan3D-2.1 is Tencent's first production-ready 3D asset generation system that combines fully open-source framework with physically-based rendering (PBR) texture synthesis to create high-fidelity 3D models from images or text descriptions.
https://github.com/Tencent-Hunyuan/Hunyuan3D-2.1?ref=producthunt
Product Information
Updated:Jun 19, 2025
What is Hunyuan3D-2.1
Released in June 2025, Hunyuan3D-2.1 represents a significant advancement in AI-powered 3D asset creation technology. It is a comprehensive system developed by Tencent that enables both professional and amateur users to generate detailed 3D models complete with high-quality textures. The system builds upon previous versions by introducing production-ready capabilities and making the entire framework open-source, allowing developers and researchers to access full model weights and training code.
Key Features of Hunyuan3D-2.1
Hunyuan3D-2.1 is Tencent's first production-ready 3D asset generation system that combines a fully open-source framework with advanced Physically-Based Rendering (PBR) texture synthesis. It features a two-stage pipeline that first generates 3D geometry through Hunyuan3D-Shape and then applies photorealistic textures via Hunyuan3D-Paint, delivering superior quality in both shape accuracy and texture fidelity compared to existing solutions.
Open-Source Framework: Complete access to model weights and training code, enabling developers to fine-tune and extend the model for various applications
PBR Texture Synthesis: Physics-grounded material simulation that generates photorealistic textures with advanced light interaction properties including metallic reflections and subsurface scattering
Two-Stage Generation Pipeline: Separate processes for shape generation (Hunyuan3D-Shape) and texture synthesis (Hunyuan3D-Paint) allowing for more precise control and optimization of each aspect
Multi-Platform Support: Compatible with MacOS, Windows, and Linux, offering flexible deployment options across different operating systems
Use Cases of Hunyuan3D-2.1
Game Development: Rapid creation of high-quality 3D assets for gaming environments and characters with realistic textures
Virtual Reality Applications: Generation of immersive 3D environments and objects with photorealistic materials for VR experiences
E-commerce Visualization: Creation of detailed 3D product models for online retail platforms with accurate material properties
Architectural Visualization: Generation of 3D architectural models with realistic textures for design presentations and virtual tours
Pros
Superior performance metrics compared to existing solutions
Full open-source access enabling customization and extension
Advanced PBR texture capabilities for photorealistic results
Cons
High GPU memory requirements (29GB for full pipeline)
Requires significant computational resources (A100 GPU recommended)
Complex setup process with multiple dependencies
How to Use Hunyuan3D-2.1
System Requirements: Ensure you have: Python 3.10, NVIDIA GPU (A100 recommended), minimum 29GB VRAM (10GB for shape generation, 21GB for texture generation)
Install PyTorch: Run: pip install torch==2.5.1 torchvision==0.20.1 torchaudio==2.5.1 --index-url https://download.pytorch.org/whl/cu124
Install Dependencies: Run: pip install -r requirements.txt
Install Custom Rasterizer: Navigate to hy3dpaint/custom_rasterizer and run: pip install -e .
Install Differentiable Renderer: Navigate to hy3dpaint/DifferentiableRenderer and run: bash compile_mesh_painter.sh
Download RealESRGAN Model: Run: wget https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.0/RealESRGAN_x4plus.pth -P hy3dpaint/ckpt
Download Hunyuan3D Models: Download Hunyuan3D-Shape-v2-1 and Hunyuan3D-Paint-v2-1 models from Hugging Face (tencent/Hunyuan3D-2.1)
Using the API: Import required modules and use the provided Python code to generate 3D models: First generate mesh using shape_pipeline, then apply textures using paint_pipeline
Running Gradio Interface: Run: python3 gradio_app.py --model_path tencent/Hunyuan3D-2.1 --subfolder hunyuan3d-dit-v2-1 --texgen_model_path tencent/Hunyuan3D-2.1 --low_vram_mode
Get Support: Join their Discord or WeChat groups for community support and discussions
Hunyuan3D-2.1 FAQs
Hunyuan3D-2.1 is a production-ready 3D asset generation model released by Tencent that can create high-resolution 3D models from images or text descriptions. It features a fully open-source framework and Physically-Based Rendering (PBR) texture synthesis.
Hunyuan3D-2.1 Video
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