At Modal, a new interactive code playground has been introduced to make running code in the cloud super fast and simple. The playground allows anyone to write and run code on Modal directly from their web browser without installing it. It includes interactive tutorials for new users and is designed to be a convenient place for experienced users to explore new features and experiment with code. The playground uses Modal Sandboxes, which provide an isolated environment to safely execute arbitrary user code. When a user hits the "Run" button, the frontend sends an HTTP request to the web server, which authenticates the request and executes the program in the sandbox using the user's ephemeral token credentials. The standard output and standard error logs are streamed back to the server. The playground is designed to help users explore and experiment with Modal, but it has limitations, such as not being able to access all of Modal's features without installing the Python package and setting up Modal locally.