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Reviewed 2026/05/20
Microsoft 365 Copilot for legal work — AI assistance in Word, Outlook, and Teams for drafting, research, and document review.
Use these non-brand research paths when evaluating whether Microsoft Copilot for Legal belongs on a legal AI shortlist for your workflow, firm profile, or procurement stage.
Reviewed by LawyerAI Editorial on 2026/05/20. Scores follow our 5-dimension review methodology.
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Microsoft Copilot for Legal represents Microsoft's entry into the legal AI market, bringing AI assistance to the Microsoft 365 environment where most legal professionals already work. In April 2026, Microsoft announced a dedicated legal work AI agent for Word, building on the Copilot platform's existing capabilities for drafting, summarization, and document review.
For law firms and legal departments already standardized on Microsoft 365, Copilot provides AI capabilities without requiring adoption of a separate platform. Copilot's integration with Word, Outlook, Teams, and SharePoint allows AI assistance to appear within the tools attorneys already use for their daily work, reducing adoption friction.
Microsoft's partnerships with legal AI providers — including the CoCounsel Drafting add-in developed with Thomson Reuters — extend Copilot's legal-specific capabilities beyond general-purpose AI assistance. These partnerships allow Microsoft to offer legal-trained AI within its platform rather than requiring separate platform adoption.
Key capabilities include AI drafting in Word, document summarization, email drafting in Outlook, meeting transcription and summarization in Teams, and legal-specific add-ins from Microsoft partners. Microsoft serves the majority of Am Law 100 firms and Fortune 500 legal departments through their existing Microsoft 365 subscriptions.