Core Viewpoint - The article discusses the development and implementation of PortAI, a digital assistant designed to assist in investment research, particularly in the context of Hong Kong and US stock markets. The focus is on enhancing the research capabilities of users by integrating deep thinking features into the AI tool [1][3]. Group 1: Development of PortAI - PortAI was created to replicate the analytical thinking of a seasoned research analyst, addressing the need for efficient data processing and independent judgment in investment research [1][3]. - The initial version of PortAI faced challenges in discerning truth from misinformation and lacked independent thinking capabilities, prompting further development [1][3]. Group 2: Features and Performance - The deep thinking version of PortAI has shown significant improvements, demonstrating a rigorous approach to data citation and judgment with a low rate of numerical hallucinations [3][4]. - PortAI has been tested in real scenarios, providing insightful analyses, such as predicting short-term overextension for Xiaomi and offering various scenarios for Tesla's performance [4]. Group 3: User Accessibility - Longbridge users can access PortAI without limitations on the number of inquiries, enhancing user experience and research efficiency [16][17]. - The app requires users to update to the latest version to utilize the PortAI feature effectively [19].