A clean and well-structured repository (e.g., GitHub or GitLab) containing all scripts for data preprocessing, model fine-tuning, and evaluation. The code will include detailed comments explaining each step, from loading and cleaning data to fine tuning models like GPT, Llama, DeepSeek, BERT, and DistilBERT to your unique needs. It will also provide instructions on setting up the environment, running the code, and reproducing the results.