Harvey has announced a significant expansion of its collaboration with Microsoft, embedding its legal AI directly into Microsoft 365 Copilot and introducing a new agentic capability inside its Word Add-In. The move targets what Harvey describes as a core inefficiency in enterprise legal work: the need to manually stitch together context across tools that were not designed for legal workflows. A LegalLeaders study of more than 300 in-house legal professionals across the US, Australia and the UK, cited by Harvey, found that nearly 70% spent over an hour each day moving between systems to piece together documents, information and priorities.

With the Microsoft 365 Copilot integration, legal teams can invoke Harvey directly within Copilot — via @Harvey or through the agent sidebar — to ask legal questions, research issues, analyse documents and pull content from their Harvey Vaults. When a task requires deeper analysis, users can click "View in Harvey" to continue the thread in Harvey's full environment before returning to Microsoft 365 for communication and document work. The integration is designed to keep lawyers inside a single workflow across research, drafting and stakeholder communication.

Running in parallel is a new Agentic Word capability within Harvey's existing Word Add-In. The feature is aimed directly at the iteration overhead that legal teams face when redlining complex agreements: Harvey plans the appropriate action based on the task at hand, eliminating the need for users to manually toggle between Ask, Edit and Draft modes. Harvey says the capability can analyse lengthy, high-stakes agreements with improved reliability, produce redlines that better reflect legal intent and negotiation strategy, and complete multi-step legal tasks in a single pass.

Harvey illustrates the combined workflow with a concrete scenario: an in-house counsel receiving a 247-page credit agreement on a $50 million senior secured credit facility, with a 48-hour turnaround. A review of that complexity would traditionally take 15–20 hours and require constant context-switching. Harvey's pitch is that the Copilot integration and Agentic Word together compress that workflow — from uploading and analysing the agreement in Copilot, to pulling precedent positions from Vault, to executing strategic redlines in Word — into a single connected session. For legal ops and in-house teams already standardised on Microsoft 365, the integration removes one of the most persistent barriers to AI adoption: the requirement to operate a separate, parallel toolset.