Yann LeCun is leaving Meta to start a new AI company focused on 'world models', a departure from the current focus on large language models (LLMs) and diffusion models. The move is seen as a result of differing priorities between LeCun and Meta's leadership. LeCun's new venture aims to explore alternative approaches to AI research. The details of the article are not available, but the comments reveal a discussion on the limitations of current AI models and the potential of world models.