pth can include Python code (PyTorch code) for inference. TF includes the complete static graph. GGUF is just weights, safetensors the same thing. GGUF doesn't

pth can include Python code (PyTorch code) for inference. TF includes the complete static graph. GGUF is just weights, safetensors the same thing. GGUF doesn't need a JSON decoder for the format while safetensors needs that. I personally think having a JSON decoder is not a big deal and make the format more amendable, given GGUF evolves too.