Google is rolling out offline Neural Machine Translation (NMT) support for 59 languages in the Translate apps. Some of the supported languages include Arabic, Chinese, English, German, Japanese, Spanish, French, and Korean (TechCrunch has a full list of the languages in their report). From the report: In the past, running these deep learning models on a mobile device wasn't really an option since mobile phones didn't have the right hardware to efficiently run them. Now, thanks to both advances in hardware and software, that's less of an issue and Google, Microsoft and others have also found ways to compress these models to a manageable size. In Google's case, that's about 30 to 40 megabytes per language. Users will see the updated offline translations within the next few weeks.