Gemini 3.8 Flash outperforms SOTA models at agentic CAD coding (www.partforge.ai)

In a breakthrough for CAD modeling, the Gemini 3.8 Flash model has been identified as the most effective agentic coding tool among five analyzed in the partforge framework, which evaluates AI's ability to generate 3D models from prompts. The study involved 54 tasks, using 675 attempts to assess models on their design quality, time efficiency, and cost-effectiveness. Notably, Gemini 3.8 Flash outperformed other contenders like OpenAI's GPT-6 Astra while being significantly cheaper, costing about a sixth of Astra's price. This makes it an attractive option for users looking for efficient CAD solutions. The evaluation revealed a disparity between AI judges' design quality assessments and human preferences, indicating that AI-generated designs may not always align with human ergonomics or aesthetic standards. As the AI/ML community explores the implications of these findings, Gemini 3.8 Flash’s integration as the default model in partforge signifies potential advancements in parametric modeling, prompting further comparisons with upcoming models like DeepSeek V4.1. By leveraging comprehensive assessments that blend measurement, performance, and subjective quality, this research sets the stage for enhanced AI capabilities in CAD, paving the way for more intuitive and productive design processes.