This article includes insights from David Sirois, a Senior Solutions Architect at GraVoc and the firm's go-to expert on Microsoft Copilot.
Microsoft is rapidly rolling out new AI features, and lately one product dominates our conversations with clients: Copilot Cowork.
Our team has been getting a steady stream of questions around Copilot Cowork, including how it differs from regular Copilot, how it compares to Claude Cowork, and what it costs. So, we asked our in-house Copilot guru, David Sirois, to give us a complete rundown on everything Copilot Cowork so you can understand what it is and how to drive adoption without the surprise costs.
What is Microsoft Copilot Cowork?
Copilot Cowork is an agentic layer inside the Microsoft 365 Copilot app that plans and completes multi-step work across your apps. You describe an outcome, and it builds a plan, works across Microsoft 365 apps like Outlook, Teams, Word, and Excel, checks in when it needs a decision, and delivers finished work.
It helps to picture Microsoft's AI as a layered stack rather than one product:
- Microsoft 365 Copilot helps you create. It is an assistant inside Word, Excel, Outlook, Teams, and PowerPoint that drafts, summarizes, and analyzes on demand. It's reactive: you prompt, it responds, you take the next step.
- Copilot Cowork helps you execute. It sends the email, schedules the meeting, builds the document, and posts to Teams, pausing for your approval on anything sensitive.
Microsoft calls this the shift from "AI assistance" to "AI execution." Cowork is powered by Work IQ, an enterprise context layer that draws on your emails, calendar, files, Teams conversations, and SharePoint so it understands your work the way you do.
How is Copilot Cowork different from Copilot?
The one-line version: Copilot answers; Cowork acts. Three things the classic Copilot can't do and Cowork can:
| Copilot limitation | What Cowork does instead |
| Single-app context — Copilot in Excel couldn't see your Outlook inbox | Cross-app context — reads across your whole tenant at once (e.g., "prep me for Monday's client meeting" pulls the invite, recent emails, the latest deck, and Teams updates) |
| Reactive — every action needed you at the keyboard | Runs in the background — hand off a task, walk into two meetings, come back to finished work; it can even run on a schedule |
| Shallow, one-step tasks | Multi-step execution — research, build a table, draft a memo, chained end to end |
One clarification for IT: Cowork isn't a separate product to install. It's an agent that appears inside the Microsoft 365 Copilot app via a Chat ⇆ Cowork toggle for licensed users once you enable it. It became generally available worldwide on June 16, 2026.
What do you need before you can use Cowork?
Three things must be in place before any task will run:
- A Microsoft 365 Copilot license: The same User Subscription License that powers Copilot in Word, Excel, Outlook, and Teams. Cowork sits on top of it as a metered capability.
- An admin who has turned Cowork on: It's off by default at general availability.
- A spending limit: No task will run until billing and a budget are configured.
Cowork runs in the Microsoft 365 cloud, not on your local machine, and works in the Copilot app on Windows, Mac, iOS, and Android. So, a task you start at your desk can be checked from your phone. Because Anthropic operates as a subprocessor inside Microsoft's infrastructure, confirm your data-residency and subprocessor settings meet your compliance requirements before enabling.
How do you turn Copilot Cowork on?
Setup is an administrator task, and it's deliberately gated so costs never start by surprise.
At a high level:
- Confirm licensing: Make sure target users hold Microsoft 365 Copilot licenses.
- Enable usage-based billing: This is the master switch that allows Cowork to run, set in the Microsoft 365 admin center.
- Set spending limits: At the tenant, group, or user level, before anyone runs a task.
- Set discoverability: Decide whether users see Cowork automatically or request access. If it's discoverable without billing enabled, users can request it and you approve or deny by policy.
- Configure models, plugins, and browser use: Cowork ships with Anthropic's Claude Opus and Sonnet, plus preview options; you control which models, which App Store plugins, and whether Cowork can complete web tasks in Microsoft Edge.
How do you assign users to Cowork?
Because Cowork is licensed-plus-metered, assigning users means three decisions: who gets a Copilot license, who Cowork is turned on for, and how much they can spend. License the users or groups who need it, enable and scope Cowork to them, and choose your rollout model — open it to everyone with a license, or make it discoverable and approve access requests one by one.
That request-and-approve flow is the simplest way to start small: light it up for a pilot group, learn your real usage and costs, then expand. Enablement and limits are both managed in the Microsoft 365 admin center, so pair each group's access with a spending limit from day one.
How much does Copilot Cowork cost?
You need a Microsoft 365 Copilot license, and on top of that you pay per task in Copilot Credits — one credit costs $0.01 under pay-as-you-go.
Four things drive the cost of a task:
- Model use: Which model runs it and how much it reasons
- Context retrieval: How much of your data it pulls in
- Tool calls: How many actions it takes across apps and plugins
- Runtime: How long the task runs end to end
So a quick "sort my inbox" is cheap; a "read twelve reports, build a model, and produce a deck and a memo" is not.
You can pay as you go (best for variable usage), buy prepaid credit bundles up front (best for predictable budgeting), or draw from existing capacity if your organization already has it. Microsoft recommends budgeting by persona — group users into heavy vs. light types, estimate each group's task mix, and multiply by the credit price. A free Customer Cowork Estimator does the math for you.
Because you only pay when Cowork works, disciplined use can come in below a flat seat fee. Keep routine jobs light, use cheaper models for everyday tasks, set sensible caps, and watch the usage reports for the first few weeks.
Is Copilot Cowork safe & compliant?
Yes, Cowork inherits your existing Microsoft 365 trust boundary rather than creating a new one. Because it can send, post, and schedule, governance matters more than it did for a chat assistant, and Microsoft built the controls to match:
- It acts as the user, with the user's permissions. Cowork can only reach what that person could already reach, respecting Microsoft Entra ID access controls.
- A human-in-the-loop approval gate stops it before sensitive actions, showing the exact action and a risk indicator so nothing consequential happens without a yes.
- Sensitivity labels, encryption, and Communication Compliance are respected, and Microsoft Purview is available to secure and govern Cowork. Browser tasks are logged in the unified audit log.
- Data residency follows the same model as Microsoft 365 Copilot, in an isolated, auditable cloud environment.
Before broad rollout, confirm which Purview controls are active in your tenant and validate your subprocessor and data-residency settings against your regulatory requirements.
Copilot Cowork vs. Claude Cowork: What's the difference?
There are two products called "Cowork," and they're related. Copilot Cowork is built with Anthropic and runs on Claude models, but they're aimed at different places in your workflow.
If your organization lives in Microsoft 365 and cares about acting within your existing data boundary and admin controls, Copilot Cowork is the natural fit. If you want a device-flexible coworker or lean heavily on coding, Claude Cowork is worth a look.
| Copilot Cowork (Microsoft) | Claude Cowork (Anthropic) | |
| Where it runs | Inside your Microsoft 365 cloud tenant | Desktop, now web and mobile |
| Native context | Deep, automatic grounding in your M365 via Work IQ | Works from what you connect; strong coding roots |
| Best fit | Teams standardized on Microsoft 365 | Users wanting a flexible, cross-device coworker |
| Licensing | M365 Copilot license + Copilot Credits ($0.01/credit) | Bundled into Anthropic subscription plans |
| Governance | Entra ID, sensitivity labels, Purview, cost controls | Anthropic's own controls |
How should you roll out Cowork?
Turning Cowork on is easy; getting value takes a plan. Start with a pilot of 5–15 enthusiastic users with a modest cap, name champions who share wins, set guardrails first around approvals, sensitivity labels, and cost caps, measure hours saved rather than credits spent, and review monthly to right-size limits before scaling.

