tech
December 16, 2025
Claude now available in Microsoft Foundry and Microsoft 365 Copilot
Today we announced that Microsoft and Anthropic are expanding our partnership. As part of the partnership, Claude Sonnet 4.5, Haiku 4.5, and Opus 4.1 models are now available in public preview in Microsoft Foundry, where Azure customers can build production applications and enterprise agents.
TL;DR
- Microsoft and Anthropic are expanding their partnership.
- Claude AI models (Sonnet 4.5, Haiku 4.5, Opus 4.1) are now available in public preview in Microsoft Foundry.
- Azure customers can build production applications and enterprise agents using Claude models within the Microsoft ecosystem.
- Claude integrates with Microsoft 365 Copilot and Excel's Agent Mode for enhanced AI capabilities.
- The integration removes procurement overhead by using existing Azure agreements and billing.
- Developers can deploy Claude via Foundry's APIs, tools, and workflows, supporting Python, TypeScript, and C# SDKs with Entra authentication.
- Different Claude models are suited for specific use cases: Sonnet 4.5 for coding and complex agents, Haiku 4.5 for speed and cost-efficiency, and Opus 4.1 for specialized reasoning.
- All models support various Claude Developer Platform capabilities like code execution, web search, citations, and vision.
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