China's AI 3D model Hi3D V1.0 goes open source, releasing weights and inference code
China's AI 3D creation platform Hi3D has announced the open-sourcing of the V1.0 model weights and inference code, with the resources now available on GitHub and Hugging Face. The model is based on the Sparc3D architecture, and its training data has been expanded from about 500,000 to about 2 million curated 3D assets. It supports an effective sparse grid resolution of up to 1536³ and takes a reference image and a coarse mesh as input to progressively refine the geometric structure, but it outputs only the geometric model and does not generate textures, materials, or vertex colors. V1.0 uses a custom license agreement: upon exceeding 200,000 monthly active users or reaching US$1 million in monthly revenue, the licensee must notify the licensor within 60 days and apply for a separate written authorization.
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The original text sets out the scope of the open-source release and the licensing threshold, so readers can judge whether this 3D generation model can be used for private deployment and commercial purposes.
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Recently, the domestic AI 3D creation platform Hi3D announced the open release of the V1.0 model weights and inference code, with the related resources now available on GitHub and Hugging Face, targeting application scenarios such as XR content production, 3D printing, industrial design, and film and television animation, and supporting developers in exploring private deployment in accordance with the license terms.
According to the official introduction, Hi3D V1.0 is based on the Sparc3D architecture, with training data expanded from about 500,000 to about 2 million curated 3D assets, and supports an effective sparse grid resolution of up to 1536³. The model takes a reference image and a coarse mesh of the same object as input and progressively refines the geometric structure, with an emphasis on preserving surface details and multi-view structural consistency. The samples officially showcased cover details such as reliefs, architectural moldings, and scales, and provide multi-view comparisons of the front, back, and bottom.
In terms of the scope of the release, this version outputs only geometric models and does not generate textures, materials, or vertex colors, so generated assets still require subsequent processing before entering specific applications. The official announcement also notes that severe structural errors in the coarse mesh may be retained, and that parts not shown in the image are treated as reasonable completions.
In addition to the open model, Hi3D has also launched Agent and MCP integration, combining the reasoning and tool-calling of large language models with professional 3D models, supporting the generation, editing, and optimization of 3D content, and allowing external agents and applications to call the platform's capabilities. The company also announced that the platform's credit consumption has been reduced by more than 50%.
Regarding commercial use, V1.0 adopts a custom license agreement that permits commercial use in compliance with its terms. When the related product or service exceeds 200,000 monthly active users or reaches US$1 million in monthly revenue, the licensee must notify the licensor within 60 days and apply for separate written authorization.
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