Lightning AI Studio is a cloud-based platform for AI development that enables users to code collaboratively, prototype rapidly, train models with multi-node support, deploy, and host AI web apps directly from the browser with zero setup. Created by the makers of PyTorch Lightning, it provides a local-like experience with access to thousands of cloud GPUs, unlimited storage, and multiplayer collaboration. It supports integrated PyTorch, flexible deployment options, and features like a multicloud GPU marketplace for on-demand compute.