Short answer
Yes. Microsoft Copilot, formerly Microsoft 365 Copilot, is available in GCC as an add-on to government plans such as Microsoft 365 G3 and G5. It runs inside the GCC boundary, and new features typically arrive later than in commercial tenants.
What works in GCC
GCC tenants with a Copilot license get Copilot Chat grounded in their work data, Copilot in Word, Excel, PowerPoint, and Outlook, Copilot in Teams chats, channels, and meetings, Copilot in SharePoint, SharePoint agents, and declarative agents.
Some newer features have not reached GCC yet. As of October 2026 that includes Edit with Copilot in the Office apps and scheduled prompts. Microsoft publishes a feature availability table for each government cloud, and it changes often.
What is different from commercial
- Web grounding is off by default. Copilot answers from work data unless an admin turns web search on.
- External Copilot connectors are off by default, and the Power Platform connector catalog is smaller.
- Billing options differ. Microsoft documents pay-as-you-go for Copilot Chat agents and SharePoint agents in commercial tenants, so GCC tenants usually plan licenses and capacity in advance.
- Claude models are not available to federal GCC customers. Non-federal GCC customers, such as state and local agencies, can turn them on.
Licensing
Government tenants buy Copilot as an add-on to Microsoft 365 G3 or G5, Office 365 G3 or G5, F1, and several standalone plans. Commercial E3 and E5 plans do not apply in GCC; the government equivalents do.
Before you turn it on
Copilot answers from whatever each person can open. In most agencies that means SharePoint sites and Teams files shared far more widely than anyone remembers. Before licenses go out:
- Review SharePoint permissions on the sites with sensitive content.
- Apply sensitivity labels to the content Copilot can reach.
- Set data loss prevention policies that cover Copilot prompts and responses.
- Publish a short acceptable-use policy.
- Train staff and admins, so the licenses get used on real work.
Based on Microsoft's published documentation as of October 2026. Microsoft changes names, features, and billing often; confirm details in your own tenant.