What is a Tensor?

A Tensor is essentially a container for numbers organized in multiple dimensions, like a more advanced version of a spreadsheet. While a single number is just a value and a list is a row of numbers, a Tensor can organize data in grids, cubes, or even higher dimensions—imagine a photo as a grid of colored pixels, or a video as a stack of those grids over time. Tensors are the building blocks AI systems use to store and process all kinds of information, from text and images to sound and sensor data. Modern AI frameworks like TensorFlow and PyTorch are built around tensor operations, performing efficient mathematical computations on these multi-dimensional arrays.