Does tokenizer changed during model training

I want to know during model training, does tokenizer alter it self, (i mean does it train) or it remain the same as original one.
For example i used the
after model training, is there any change to tokenizer?

Hi, Talha,

Tokenizer id does not change. For example, the token_id of [['sep']] is 102. It will be 102 through the training. But the embedding hidden state will be changed.