OpenAI introduced a shopping research tool within ChatGPT that offers detailed product comparisons and personalized buying guides for all users across mobile and web platforms as the holiday shopping season starts.Users access the feature by selecting "Shopping research" or asking shopping-related questions, enabling comparison of items like electronics, beauty, and home appliances using information from trusted sources.The assistant is powered by a special version of GPT-5 mini and will soon integrate Instant Checkout, while OpenAI assures chat privacy and faces competition from companies like Google in AI shopping services.