level model the perplexities that it would assign to a ward level model but some word level models might have limitations like using unknown tokens or out of vocabulary that means they can't actually compute probabilities of arbitrary sentences whereas that someone in the expressive benefits of a character level model so the simplest way to do this would be you would convert the word level model like the token sequence of processed like let's just say it's split on spaces you'll just rejoin on spaces and then compute