This study explores how users across four generational cohorts (Baby Boomers, Generation X, Millennials and Generation Z) navigate between traditional search engines and generative AI tools. Drawing on 213 valid survey responses, the analysis compared preferences for Google and ChatGPT across information categories such as health, education, technology and business. Results show that older cohorts relied more heavily on Google, particularly for factual and location-based queries. In comparison, younger cohorts demonstrated greater affinity for ChatGPT, especially in creative and problem-solving domains. Text-based interaction remained predominant across all groups, although Millennials and Generation Z displayed greater openness to multimodal use (text and voice). The findings highlight the coexistence of search engines and generative AI in information-seeking behaviour and provide insights into shifting digital practices with implications for educators, designers and policymakers.