The PyTorch Foundation has welcomed Ray as a foundation-hosted project, completing a unified open source AI compute stack alongside PyTorch and vLLM. Ray is a distributed computing framework that enables teams to scale AI workloads from single machines to thousands of nodes without distributed systems complexity. With over 237 million downloads and 39,000 GitHub stars, Ray handles multimodal data processing, pre-training, post-tuning, and distributed inference. Originally developed by Anyscale at UC Berkeley, Ray now operates under open governance within the Linux Foundation, providing developers with an integrated foundation for building and scaling AI applications efficiently.

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