OpenAI officially announced GPT-3.5 Turbo fine-tuning and API updates some time ago. Today, I tried out the training process briefly. By following the steps on the official website, you can successfully complete the training in four steps. The training process takes about 10 minutes, though the duration depends on the amount of training data you have. The first step is to prepare the fine-tuning data by saving it as a text file with a .