Autistic children can experience memory and communication challenges that make reporting or recalling events difficult. Although open-ended prompts are generally considered the most effective question type, there is some debate about the utility of such prompts for autistic children. We systematically examined the responsiveness of autistic and non-autistic children to two main open-ended prompt subtypes: breadth and depth. Thirty-eight autistic and non-autistic children were interviewed about a short film they watched using a combination of breadth and depth prompts. Depth prompts yielded the most productive reports from children in both groups. Further, while autistic children gave shorter responses, their reports contained no fewer unique details than their non-autistic peers. These results have implications for investigative interviewers who should consider utilizing a combination of breadth and depth prompts with children diagnosed with autism.