TaskMatrix.AI is an AI-based ecosystem that aims to connect foundation models with a myriad of APIs for task completion. Rather than advancing a single AI model, TaskMatrix.AI emphasizes on utilizing existing foundation models, serving as a central system similar to a brain. It leverages APIs of other AI models and systems as sub-task solvers to accomplish diverse tasks across both digital and physical domains. The system enhances the scope and capabilities of AI technology by facilitating partnerships with other models and systems. Moreover, its application to the visual domain is embodied in the example of Visual ChatGPT. Notably, the online system for TaskMatrix.AI is under development and is anticipated to be launched in the near future. With its distinctive approach, TaskMatrix.AI represents a paradigm shift in the landscape of AI development.