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Microsoft Copilotmodel

August 25, 2026·Source

Sonnet 5 in the Copilot Models Menu for Word

Anthropic's Sonnet 5 is now selectable in Copilot for Word and is the default for higher-reasoning drafting and editing.

Details

Sonnet 5 appears in the Copilot models menu in Word and is set as the default model for higher reasoning tasks
Microsoft attributes the change to more precise and contextually relevant text, better suggestions on complex edits, and better handling of nuanced language
Runs under the same Microsoft 365 security and compliance controls as other Copilot models
Available on Web

Best for

Drafting and editing where the reasoning matters more than the speed of the reply.

When to use it

You are working on complex or nuanced copy and Copilot's earlier suggestions needed heavy correction.

Who benefits

Word users who draft substantial writing in Copilot rather than short snippets.

More from Microsoft Copilot

Voice Q&A During Read Aloud in Word

Explain Selected Slide Text in PowerPoint Live

Email References in Copilot for PowerPoint

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Sonnet 5 in the Copilot Models Menu for Word | Microsoft Copilot | Chasing Next