Lightning AI is an ML development platform designed to help developers and AI teams train, deploy, and manage high-performance models. It offers collaborative GPU workspaces, persistent notebooks, and managed training and inference clusters, with multi-cloud and on-premises options. The platform builds on the PyTorch Lightning ecosystem and emphasizes production-grade tooling, security, and scale for idea-to-production workflows. Headquartered around the creators of PyTorch Lightning, it serves developers globally with cloud GPUs, DevBoxes, and end-to-end model serving and experimentation capabilities.