There isn’t an official ranking for the “No. 1 AI” globally, as various AI systems are specialized for different tasks. OpenAI’s GPT-4, DeepMind’s AlphaZero, and IBM Watson are among the leading models, each excelling in its respective fields such as natural language processing, strategic gaming, and data analytics. Their capabilities vary, so the “No. 1 AI” depends on the criteria used to evaluate them.