In today’s episode of AI Deep Dive, we examine Duolingo’s growing reliance on AI to create language courses, a move that sparked backlash over potential job losses. We also discuss Worldcoin's new partnerships with Visa and Tinder, aiming to mainstream its biometric identity tech and crypto card. Meanwhile, Google begins testing ad placements in chatbot conversations, raising questions about monetization and user experience. Lastly, a study alleges bias in Chatbot Arena's benchmarking process — could some AI labs be gaming the system?