Group 1 - Duolingo, Inc. (NASDAQ:DUOL) is a mobile learning platform offering courses in multiple languages and digital English proficiency assessments [2] - Recent earnings estimates were beaten, but concerns arise regarding rising AI competition, user dissatisfaction, and Apple's new live translation feature [1] - Jim Cramer expressed that Duolingo is too strong a company to short, suggesting selling instead due to competition from Apple's translation capabilities [1] Group 2 - There is potential for Duolingo as an investment, but certain AI stocks are considered to have greater upside potential and less downside risk [3]