Pixeltable is a Python library providing a declarative interface for multimodal data (text, images, audio, video). It features built-in versioning, lineage tracking, and incremental updates, enabling users to store, transform, index, and iterate on data for their ML workflows. Data transformations, model inference, and custom logic are embedded as computed columns. Pixeltable is persistent. Unlike in-memory Python libraries such as Pandas, Pixeltable is a database.