Autodesign? Large Language Model Evaluations for UX Assistants

Review and Guidelines

Authors

DOI:

https://doi.org/10.29147/datjournal.v11i2.1034

Keywords:

LLM, Evaluation, Design, UX Research, UX Writing

Abstract

Large language models (LLMs) are being rapidly integrated into design workflows for Design Systems, UX research, and UX writing, but systematic methods to evaluate their safety and utility are lacking. Based on a scoping review, this paper maps key evaluation challenges and proposes three frameworks specific to these tasks. Each framework connects design activities to measurable success criteria (e.g., ≤ 3% hallucination, < 2s latency) and suggests datasets for reproducible testing. A demonstration with GPT-4o and Gemini 2.5 illustrates how the metrics identify the models' strengths and weaknesses. The guidelines offer design teams a practical roadmap to incorporate continuous, evidence-based testing, promoting greater rigor and accountability in AI-assisted design practice.

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Author Biography

Weynner Kenneth Bezerra Santos, UFPE

PhD candidate in FiGitAL Design (UFPE, 2028); MBA in Project Management (USP, 2022); Master’s in Digital Artifact Design (UFPE, 2019); and a Bachelor’s degree in Design (UFPE, 2016). Works as Senior Research Analyst at PicPay’s Design Center of Excellence, helping the company to apply AI for user research and other design contexts, leading the ResearchOps squad.

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Published

2026-08-28

How to Cite

Santos, W. K. B. (2026). Autodesign? Large Language Model Evaluations for UX Assistants: Review and Guidelines. DAT Journal, 11(2), 194–211. https://doi.org/10.29147/datjournal.v11i2.1034