Which language learning product was the first to introduce neural machine translation technology that reduced translation errors by over 60% compared to its previous statistical methods?

In the world of language learning and linguistics, certain products have revolutionized how we approach language acquisition and translation. One particular technological breakthrough created a massive shift in the industry, combining advanced AI with linguistic expertise. Test your knowledge about this significant product launch that changed how millions of people interact with foreign languages.

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Google Translate (2016 neural network update)
Rosetta Stone Version 5 (2013)
Duolingo Plus (2017)
Microsoft Translator's 'Z-code' system (2018)