These are Toy-GPTs for demonstrating and teaching principles, internal components and features of LLMs. Huggingface Transformers.py library is not used. Only libraries such as Pytorch. Generally, these Toy Models are small and can be operated in CMD console in Windows 10 Laptop having no pytorch-available GPU. But, the hyperparameters can be changed to increase or decrease the total number of parameters (not tried and tested)