Anthropic’s Claude Models Now Available in Microsoft Foundry

Anthropic and Microsoft Corporation have expanded their collaboration, bringing Anthropic’s Claude models to Microsoft Foundry, according to a Microsoft announcement. The integration makes Claude Sonnet 4.5, Haiku 4.5, and Opus 4.1 available in public preview through Foundry, enabling Azure customers to deploy and manage these models directly.

The Claude models can now be used for enterprise-grade AI development, including coding, research, and agentic workflows. Foundry users can deploy the models via serverless infrastructure, scale applications automatically, and authenticate through Microsoft Entra ID or API keys. The models are accessible under existing Azure agreements, including Microsoft Azure Consumption Commitment eligibility.

Claude Sonnet 4.5 is designed for complex agents and autonomous coding tasks, while Haiku 4.5 offers faster performance for high-volume applications. Opus 4.1 supports detailed reasoning and long-horizon problem solving. Each model supports features such as code execution, vision input, and web search, and can be integrated into Foundry’s Agent Service for building intelligent, multi-step workflows.

The models are priced at $1 per million input tokens and $5 per million output tokens for Haiku 4.5, $3 and $15 for Sonnet 4.5, and $15 and $75 for Opus 4.1. They are available in the Global Standard deployment, with regions including East US 2 and West US. Enterprises can begin deploying Claude models today through the Microsoft Foundry catalog.