Earlier quoted context omitted.
> Can you change the tokenizer? Yes. You can change it however you like, then look at the paper [1] under section 3.2. to know which hyperparameters were used during training and finetune the model to work with your new tokenizer using e.g. FineWeb [2] dataset. You'll need to do only a fraction of the training you would have needed to do if you were to start a training from scratch for your tokenizer of choice. The w…
You can change the tokenizer and build another model, if you can come up with your own version of the rest of the source (e.g., the training set, RLHF, etc.). You can’t change the tokenizer for this model, because you don’t have all of its source.
There is 0 doubt that you are better of finetuning that model to use your tokenizer than training from scratch. So what Meta gives you for free massively helps you building your model, that's OSS to me.