FllumaOne: A Code-Native Multimodal CAD Dataset with Executable Programs and Kernel-Validated Feature Histories

In three linesFllumaOne is a multimodal CAD dataset of 100,000 models generated by executable Python programs in Flluma (OpenCASCADE-based CAD system). Each sample aligns the program with a feature tree, STEP representation, point cloud, and natural-language descriptions. A Qwen2.5-Coder-1.5B baseline achieves 99.98% Python syntax validity and 99.14% STEP-export validity.

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