Hello guys, would you consider this supervised or unsupervised learning?

I am using Keras LSTM to generate new text, by tokenizing it, making n-grams from it and training the LSTM to predict the next word (token) by putting n-1 n-grams as a train sample, and as "labels" I am putting the last word (token) of the n-gram. Would you consider this supervised or unsupervised ML?

Technically, I do have a label for every n-gram, its own last word, but the dataset itself was not labeled beforehand. As I am new to ML I am a little bit confused and even ChatGPT sometimes says that its supervised, and sometimes unsupervised ML.

Thanks for any answers.