Meta is transforming AI into the operating layer for Facebook, Instagram, WhatsApp, ads, creators, open models, and wearable devices like the Ray-Ban Meta smart glasses. Meta has framed AI and the metaverse as its two largest long-term bets, with investor attention shifting heavily toward AI since 2023. Meta's AI work sits on three foundations: research through FAIR, infrastructure including large-scale data centers, and products including the Meta AI assistant, AI Studio, and Advantage+. The Llama model family is central; Meta reported that Llama and Llama 2 passed 100 million downloads by 2023, and Llama 3, released in 2024, pushed Meta further into the front rank of model providers. Key trends include AI becoming the primary interface, with the Meta AI assistant woven into Facebook, Instagram, WhatsApp, and other surfaces. For enterprises, Zuckerberg has pointed to AI agents for customer support and commerce across WhatsApp and Messenger as a major future revenue stream.