The AI service lists differed slightly between waves. March listed DeepSeek and Character.AI, which August dropped, and August described Meta AI with examples of where it appears, such as WhatsApp and Instagram.
【方法】调查中AI服务列表的变化可能影响结果比较。三月调查包含DeepSeek和Character.AI，而八月调查没有，同时对Meta AI的描述更详细。这种变化可能导致用户报告偏好的服务不同，影响使用频率数据的可比性。