Evaluation Finds Generative UI Tools Leave More Than a Quarter of Design Requirements Unmet

Summary

The article reports results from an evaluation of five generative UI tools across 24 tasks, producing 120 interfaces in total. It found that more than 25% of the requirements in user-facing design specifications were not implemented. The evaluation also reports that 34% of functional requirements were left unimplemented. These figures are presented as direct evidence that claiming a task is complete does not necessarily mean the implementation is actually complete. The stated scope is limited to the selected tasks and tools, and the 25% denominator refers to the design specifications rather than the broader frontend projects. The results therefore cannot be used to infer visual-fidelity failure rates, CSS failure rates, or the performance of all current AI models. The article cites a summary of the original research rather than presenting a broader benchmark.