Which language learning company first launched an AI-powered adaptive learning system that personalizes lessons based on individual speaking patterns and pronunciation difficulties?

Test your knowledge about major product launches in the language technology industry! The linguistics and language learning market has seen significant innovations in recent years, with various companies competing to revolutionize how we learn and process language. This trivia focuses on a notable product launch that changed how consumers interact with language learning tools.

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Babbel (with Babbel Live in 2021)
Duolingo (with BERT-based system in 2020)
Busuu (with Busuu AI Speech Recognition in 2018)
Rosetta Stone (with TruAccent in 2019)