I am trying to use the open ai api to label cells based on which protein markers they express. I was able to run it once using gpt-3.5-turbo. However, even though I changed the prompt significantly and changed my model to gpt-4o-mini, I keep getting the exact same response from the api, with the model using gpt-3.5-turbo and having the same exact id. Is there any way I can fix this issue?