Overview

• The Information reports Microsoft will use Anthropic’s Claude Sonnet 4 for select Copilot features in Word, Excel, Outlook and PowerPoint alongside OpenAI.
• Internal testing found Claude performed better on tasks such as automating financial functions in Excel and generating more polished PowerPoint slides, according to the report.
• Microsoft will route access to Anthropic models through Amazon Web Services, requiring payments to a direct cloud competitor.
• An announcement is expected in the coming weeks, and Copilot pricing is reported to remain at $30 per user per month.
• Microsoft says it remains committed to its long-term OpenAI partnership while continuing to develop in-house models and integrate other third-party options in Azure.