Deepnote is a cloud-based notebook IDE that supports Python, SQL, and R, and is now open-source. It features an AI layer aware of your codebase, metadata, and business context — capable of generating, refactoring, explaining, and debugging code. It supports deploying notebooks as APIs, scheduling runs, connecting to data warehouses and lakehouses, running on GPUs, and building autonomous data agents via a composable skill and project system accessible through a REST API and a VS Code extension.