Definition
Ray is an open-source distributed computing framework for scaling Python and AI workloads (data processing, training, inference, reinforcement learning) across clusters of CPUs/GPUs. Created by the founders of anyscale; donated to the PyTorch Foundation in 2025.
Key Points
- De facto open standard for many large-scale ML platform teams
- Commercial managed services historically via anyscale
- Remains community-governed open source after nscale acquisition announcement