Which AI-driven language product innovation first achieved human-level quality in machine translation according to the BLEU score benchmark?

Language technology has transformed how we communicate across borders and cultures. From real-time translation to language learning apps, product innovation in this field has made remarkable progress in recent years. This trivia question explores a groundbreaking linguistic product development that changed how we interact with language barriers. Test your knowledge about the cutting-edge technologies reshaping our multilingual world!

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Google's Neural Machine Translation system (GNMT) using transformer architecture
Microsoft's Z-code multilingual translation model
DeepL Translator's context-aware neural network
Facebook's M2M-100 multilingual machine translation model