OpenAI Confirmed Using NVIDIA GB200 NVL72 for AI Training and Inference

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NVIDIA has identified OpenAI as one of its Lighthouse model builders deploying the GB200 NVL72 rack-scale system for next-generation model training and production inference. The confirmation came from NVIDIA's Q2 2026 earnings call, which named OpenAI among key users of the integrated data-center-scale platform. Unlike traditional single-GPU setups, the GB200 NVL72 treats a large pool of compute resources as a coordinated system, designed to support both training and serving workloads. Separately, NVIDIA has unveiled its next-generation Vera Rubin platform, with Microsoft Azure announcing plans to integrate Rubin NVL72 racks across its AI superfactories, though no direct OpenAI-Rubin deployment has been confirmed. The developments reflect a broader industry shift from individual accelerators toward tightly integrated, rack-scale infrastructure for frontier AI development.

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