Anthropic's Claude models now generally available on NVIDIA GB300 Blackwell Ultra in Azure Foundry

Claude models reached general availability in Microsoft Foundry, hosted on Azure and running on NVIDIA's GB300 NVL72 Blackwell Ultra platform. The integration provides Azure-native access with existing identity, billing, and governance controls, plus an optional US data zone for organizations with data-residency requirements, and covers models including Claude Opus 4.8 and Claude Haiku 4.5.

Technically, pairing Claude with GB300 Blackwell Ultra targets the performance and scale demands of production agentic workloads — long-context reasoning, tool use, and high-throughput inference. For enterprises already standardized on Azure and Microsoft 365, it removes friction: governance, billing, and identity stay in one place rather than spanning a separate Anthropic account.

Competitively, the move is notable because it widens Anthropic's distribution beyond AWS — its primary cloud partner — at exactly the moment that relationship is publicly strained over token-based pricing. Multi-cloud availability (AWS Bedrock, Azure Foundry, and Google) gives Anthropic leverage and gives enterprises the multi-model, multi-cloud fallback posture developers have been demanding all week.

The announcement was amplified across vendor channels, with NVIDIA, Microsoft, and Anthropic all promoting the GB300 availability on X. Skeptics note that 'generally available on the newest GPUs' is increasingly table stakes, and that the more interesting subtext is the AWS–Anthropic tension pushing Claude onto rival infrastructure. What to watch: whether Azure pricing undercuts Bedrock, and how the optional US data zone plays with regulated industries.