Involuntary cognition includes subjective phenomena like déjà vu, tip-of-the-tongue (TOT) state and jamais vu. Given their spontaneity and subjectivity, it remains challenging to understand how these phenomena are perceived and classified. In this paper, we take an existing dataset from a reasonably large sample (n=860) across three countries (Poland, France and Pakistan) and evaluate ChatGPT's ability to classify subjective descriptions of spontaneous experiences. We compared ChatGPT's responses (versions 3.5 and 4.0) with human participants to assess its accuracy in classification. While ChatGPT showed high accuracy for déjà vu and TOTs, it struggled with jamais vu, indicating limitations in classifying less well-defined spontaneous cognition.