OpenAI recently released a press release announcing improvements to the fine-tuning API and further expansion of the custom model plan. The press release contains the following improvements to the fine-tuning API: Epoch-based Checkpoint Creation. During each training epoch (a training process that passes all samples in the training dataset once (and only once)), a complete fine-tuning model checkpoint is automatically generated to reduce the need for subsequent retraining, especially in the case of overfitting…