Claude in Microsoft Foundry

Claude Sonnet 4.5, Haiku 4.5, and Opus 4.1 are now available in public preview in Microsoft Foundry, and Microsoft's Agent Mode in Excel includes an option to use Claude in preview.

Anthropic | In Edition 10, Saturday 22 Nov 2025

SOURCE Anthropic, Claude now available in Microsoft Foundry and Microsoft 365 Copilot

Added to The Deploy Log Monday 14 Sep 2026, updated Thursday 17 Sep 2026. Read Edition 10, the edition that carried it.

The call on this one

What shipped is free. The call on it, what to do about it and the condition on that, opens with a signup: free, no card, every edition in full.

It becomes $50 a year, and signing up now keeps your first year free.