This article thoroughly compares vacuum mold casting with injection molding, focusing on their technological differences, cost structures, suitable production volumes, and material capabilities. It explains the benefits and drawbacks of each method, helping manufacturers and brand owners choose the ideal process for prototyping, limited runs, or mass production. Vacuum mold casting is highlighted for its rapid setup and low tooling cost, perfect for prototypes and small batches, while injection molding offers superior precision, durability, and cost-effectiveness in high-volume manufacturing.