Implementing innovative item types is challenging; however, alternatives to traditional item types such as multiple-choice questions (MCQs) and short answer questions (SAQs) may create an assessment that with a stronger validity argument. In this presentation, an innovative item type that is a hybrid of MCQs and SAQs is introduced: the Generated Response Option (GRO) item. GRO mimics a SAQ as the examinee will begin by typing type their response into a text box. After typing at least 3 characters, options matching the input are dynamically drawn from a pre-determined list of possible response options and presented to the examinee. GRO may benefit examinees by offering a more authentic assessment. Additionally, GRO may give test developers flexibility, without the burden of writing distractors. Findings from think aloud protocols will be shared, along with a discussion of next steps, and advice for the audience about developing innovative item types for high-stakes assessments.