The article outlines the shifting dynamics in e-commerce and retail media, particularly with the rise of AI chat ads. OpenAI's recent announcement of integrating ads into ChatGPT and Google's partnership with Walmart for its AI competitor, Gemini, highlights the potential for AI to reshape online shopping. However, the effectiveness of these chat ads compared to traditional search ads remains uncertain. Kiri Masters, a notable figure in retail media, expresses optimism about AI ads if they maintain a balance between being helpful and not intrusive. She suggests that the deep personalization available through chat interfaces could enhance ad relevance. Despite this potential, there are significant questions about how AI shopping might impact existing retail media. Masters warns that brands are quick to shift their advertising budgets based on performance, emphasizing the need for AI shopping interfaces to genuinely improve the consumer experience. Her personal experience with ChatGPT for grocery shopping revealed that it wasn't significantly better than traditional apps, indicating that the technology still has hurdles to overcome. Retailers are cautious about relinquishing control in these new models. They want to remain the merchant of record, handling customer service and returns, which is essential to their value proposition. The article also raises concerns about data privacy, particularly if AI platforms leverage shopping data for broader ad targeting, potentially undermining retailers' off-site media networks. OpenAI claims it won't sell user data, but the implications of these developments are still unfolding.