Why GPT answer same everytime?

A college student recounts an incident where an entire class submitted assignments with identical SQL queries, leading faculty to believe students copied each other. The assignments also featured the same names: Rahul, Amit, Neha, Priya. The student later realized that providing GPTs with the same questions often yields identical responses, suggesting the assignments were generated by AI, which caused confusion and accusations of plagiarism among students who had worked hard.