Meta's Generative AI (Gen AI) assistant, integrated across its family of apps, is used by over a billion people each month, stated CEO Mark Zuckerberg. Most usage was seen on WhatsApp, said CFO Susan Li. However, Google's AI Overviews in search results cater to over 1.5 billion people, making it the largest Gen AI distributor globally, said Google CEO Sundar Pichai. The numbers' release comes as big tech firms compete to dominate the Gen AI space.