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This article lists recent features, improvements, and changes in Microsoft 365 Copilot Cowork. For a full guide to Cowork's capabilities, see Use Cowork.
June 2026 (general availability)
Cowork is now generally available to all Microsoft 365 Copilot tenants. This release brings new models, image generation, browser use, the Customize page, and consumption billing.
New features
| Feature | Description | Learn more |
|---|---|---|
| General availability | Microsoft 365 Copilot Cowork is generally available to all Microsoft 365 Copilot tenants worldwide in tier-1 languages. | Cowork overview |
| Claude Opus 4.8 model | Opus 4.8 is now available as a model option in the model selector. | Use Cowork |
| Claude Sonnet 5 model | Sonnet 5 is now available in the model selector as the efficient choice for everyday tasks, replacing Sonnet 4.6. | Choose a model for Cowork |
| Claude Fable 5 (Preview) model | Fable 5 is now available in preview in the model selector for your toughest challenges. Fable 5 is off by default; an admin turns it on in the Microsoft 365 admin center under Copilot settings. Fable 5 requires data retention, so your prompts and responses for that model are retained by the model provider, and Cowork shows a banner while it's selected. | Data retention |
| Image generation | Cowork can generate images using Imagen 2. Ask for an image in chat and Cowork saves it to your conversation and your OneDrive output folder. | Generate images |
| Local browser use (Frontier) | Cowork can complete web tasks for you in Microsoft Edge on your device, using your existing sign-ins and your organization's policies. In Frontier and requires that Edge is installed. | Use the local browser with Cowork |
| Customize page | A single Customize page now hosts your plugins and your skills. Browse, install, and share plugins and skills in one place; create new skills with a guided conversation. | Customize Cowork |
| Guided skill builder | Create a new skill by selecting Add > Create new in the Customize > Skills tab. Cowork walks you through naming, describing, and writing the skill in a guided conversation. | Create custom skills |
| Upload a skill | Import a skill file (.md, .zip, or .skill) from the Customize > Skills tab by selecting Add > Upload skill. |
Upload a skill |
| Upload a plugin package | Upload your own plugin package from the Customize > Plugins tab. Cowork converts a Claude or other compatible package into a publishable package, including bundled skills and connectors. | Upload a plugin package |
| Share skills and plugins | Share a skill or plugin you created with only yourself or specific people in your organization, and re-share to keep recipients up to date when you make changes. | Share skills and plugins |
| Brand templates | Cowork applies your organization's brand template (fonts, colors, logos, layouts) to the PowerPoint decks it creates. | Use brand templates with Cowork |
| Usage-based billing | Cowork now uses usage-based billing. Admins see usage in the Microsoft 365 admin center and can set per-user or per-group limits. | Usage-based billing. |
Enhancements
| Feature | Description | Learn more |
|---|---|---|
| Expanded plugin catalog | The Microsoft 365 App Store now lists Microsoft and partner plugins for Cowork at launch, including Microsoft plugins (Dynamics 365 Customer Service, Dynamics 365 Sales, Dynamics 365 ERP, Fabric IQ) and partner connectors (Jira, Salesforce, ServiceNow, SAP ERP, Workday HCM, Zendesk, and more). | Available plugins for Cowork |
| Refreshed admin governance | The admin guidance now covers model toggles, browser-use controls, consumption visibility, and Purview integration in one place. | Manage Cowork for your organization |
| MCP apps support | Author and render interactive UI widgets from your MCP server in Copilot Cowork | Copilot Cowork MCP apps plugin author guide |
May 2026
New features
| Feature | Description | Learn more |
|---|---|---|
| Claude Opus 4.7 model | Opus 4.7 is now available as a model option in the model selector. | Use Cowork |
| Mobile app support | Cowork is now available on iPhone and Android through the Microsoft 365 Copilot mobile app. | Get started |
April 2026
New features
| Feature | Description | Learn more |
|---|---|---|
| Expanded skills support | You can now add 50 custom skills through natural language or OneDrive. | Manage your tasks |
| Markdown support in OneDrive | OneDrive and SharePoint now have native support for Markdown files, including custom skill files. | Introducing Markdown support in SharePoint and OneDrive |
| Search task history | Home page task list is scrollable with search and status filters, replacing the static five-item view. | Manage your tasks |
| Notifications in app | Users are notified via a pop-up when input is needed or when a task is complete. | Manage your tasks |
| Plugins | Browse, install, and manage plugins from the Microsoft 365 App Store to add new skills and connectors. | Use plugins |
Enhancements
| Feature | Description | Learn more |
|---|---|---|
| Longer prompts | Chat input now supports up to 250,000 characters, up from 16,000. | Type a message |
| Improved paste handling | Pasting mixed content from Teams, Outlook, or browsers correctly preserves text. | Attach files |
| Richer Teams messages | Messages posted to Teams can include formatted cards with structured data. | Communication |
| Calendar timezone display | Event times show in your local timezone with an abbreviation. | Calendar and meetings |