Copilot Cowork Goes General Availability: Mobile, Plugins, and the Anthropic Connection

Microsoft’s Copilot Cowork — the agentic layer of Microsoft 365 Copilot that carries out multi-step work on a user’s behalf — is now generally available worldwide, running on desktop, browser, and mobile alike. That milestone, reached on June 16, 2026, is easy to miss amid a string of earlier headlines about Cowork “coming to mobile” or “adding plugins.” Those updates were real, but they happened in stages, not all at once, and understanding the sequence matters for anyone trying to figure out what Cowork can actually do today.

Here’s the short version: Cowork moved from a research preview in early 2026, to Microsoft’s invite-only Frontier program in late March, to a mobile-and-plugins update in May, to full general availability in June. Each stage added something real. None of them, on its own, is “the launch.”

What Is Copilot Cowork?

Cowork is not another chatbot bolted onto Office. It’s the part of Microsoft 365 Copilot designed to take a broad instruction — draft a client update from last week’s meeting notes and send it to the team, for example — and carry it out across multiple apps without step-by-step prompting. According to Microsoft’s own documentation, Cowork can send emails, schedule meetings, build documents, post messages in Teams, search across an organization’s files, and conduct multi-source research, checking in with the user for approval before it takes consequential actions.

The system runs on what Microsoft calls “Work IQ,” an intelligence layer that draws on signals from a user’s emails, meetings, files, and other work data, then applies different underlying AI models depending on the task. That multi-model design is part of what makes Cowork’s backstory unusual: Microsoft has said the platform builds on technology behind Anthropic’s Claude Cowork and Claude Dispatch tools, and at general availability, the model picker inside Cowork includes Anthropic’s Claude models — reportedly Opus 4.8 and Sonnet 4.6 — alongside OpenAI’s GPT-5.5 and an “Auto” option that selects a model automatically.

It’s a notable arrangement for a company whose AI identity has been closely tied to OpenAI. Cowork suggests a more pragmatic posture: Microsoft appears willing to route work to whichever model performs best for a given task, even when that means leaning on a rival AI lab’s technology inside its own flagship productivity suite.

The Real Timeline — Preview to General Availability

The confusion around Cowork’s mobile and plugin capabilities largely comes down to timing. Here’s how it actually unfolded:

• Around March 2026 — Copilot Cowork appears in Research Preview, Microsoft’s earliest public testing phase.
• March 30, 2026 — Cowork moves into the Frontier program, an early-access channel for enterprise customers willing to test unfinished AI capabilities under tighter controls.
• May 5, 2026 — Microsoft announces mobile support for iOS and Android, along with reusable “Cowork Skills” and plugin support — but this update is still Frontier-only, not available to the general public.
• June 16, 2026 — Copilot Cowork reaches general availability worldwide, bringing mobile access, plugins, and a new model picker to all eligible Microsoft 365 Copilot customers, not just Frontier participants.
• July 2026 — Microsoft rolls out an improved authoring workflow for building skills and plugins, including the ability to convert Anthropic Claude or “Open-Plugin” packages into Cowork-compatible plugin bundles.

So when a headline says Cowork “just launched on mobile,” it’s worth asking which of these two moments it means. The capability existed in preview form starting in May; it became something any licensed Microsoft 365 Copilot customer could actually use starting in June.

Mobile Access — What Changed

There’s no separate “Copilot Cowork app” to download. Mobile access lives inside the existing Microsoft 365 Copilot app for iPhone and Android, which already handles Copilot Chat and other features. Once an organization’s admin enables Cowork, it simply appears in that same app, with a “Start a task” prompt and a handful of quick-start options.

The more meaningful shift is architectural rather than cosmetic. Because Cowork tasks run in the cloud rather than on the device, a job started on a phone during a commute keeps running and can be picked up later on a laptop, in the same conversation, with the same context. Microsoft has described the mobile version as a full port of the desktop experience rather than a stripped-down companion app — though that framing comes from Microsoft itself, and no independent testing of feature parity between mobile and desktop was found in available reporting.

Built-In Skills vs. Plugins — An Important Distinction

This is the detail most likely to get garbled in casual coverage: PowerPoint support is not a plugin. It never was.

Microsoft’s documentation lists PowerPoint, alongside Word, Excel, PDF creation, email, scheduling, calendar management, meeting prep, enterprise search, and deep research, as built-in skills — capabilities baked into Cowork since its earliest preview. If a user asks Cowork to build a slide deck, it’s drawing on a native capability, not an add-on.

Plugins are a separate system entirely. They’re distributed through the Microsoft 365 App Store — the same distribution channel used for Teams apps and Office add-ins — and they extend Cowork with new skills or connectors to outside systems. A plugin might teach Cowork specialized financial-analysis expertise, for instance, or connect it to a data source that isn’t part of Microsoft 365 at all. Users can browse available plugins from a menu inside Cowork, and administrators can also push plugins out automatically across an organization.

What Plugins Actually Add

Plugins bundle two kinds of extensions: skills, which are prompt-based workflows teaching Cowork new domain expertise, and connectors, which link Cowork to external data sources and APIs. Both are packaged together in a standard Microsoft 365 app format and distributed through the App Store.

At the May 2026 update, Microsoft named a handful of examples: native integration with Power BI through a system called Fabric IQ, and ties into Dynamics 365 for sales and customer-service workflows. Third-party connectors for tools including Miro, monday.com, LSEG, and S&P Global Energy were described as “coming soon” at the time. A complete, current catalog of every plugin available to Cowork users was not found in public documentation — Microsoft’s plugin marketplace listing appears to be a live, evolving list rather than a fixed set announced at launch.

The system has also gotten easier to build for. As of a July 2026 update, users can add a skill or plugin through a guided creation flow, or by dragging and dropping an existing file — including, notably, converting a Claude or “Open-Plugin” package directly into a Cowork-compatible bundle. That detail underscores again how closely Cowork’s extensibility model tracks with Anthropic’s own tooling, even as the two companies remain competitors in other parts of the AI market.

One technical limitation worth flagging for anyone building or evaluating plugins: as of the latest available documentation, Cowork does not yet support API-key authentication for plugin connectors. Developers whose systems require an API key are directed to alternative authentication methods instead.

Adoption and Performance Claims

Microsoft’s general-availability announcement came with some numbers, all of them self-reported. The company said more than half of the Fortune 500 were using Cowork by the GA date, and named several enterprise customers, including Accenture, Avanade, Capital Group, Koch, and Zurich Insurance, as early adopters. Microsoft also described power users assembling more than 150 skills into a single task and running 500 or more tasks in a week — figures that illustrate intended use cases more than they document typical usage.

On cost, Microsoft published its own comparison claiming that Copilot Cowork runs 30 to 40 percent cheaper per prompt than “Claude Cowork” when accessed through a Microsoft 365 connector. That figure comes from Microsoft’s internal testing, comparing its product against a related offering from the same AI lab whose technology partly underpins Cowork itself. No independent benchmark of that comparison was found, and readers should treat the number as a vendor claim rather than an audited result.

How It Compares — Google Workspace and Presentation Tools

Cowork’s most direct competitor isn’t a presentation tool — it’s Google’s own push into agentic productivity software. Google Workspace Studio lets users build and delegate tasks to agents that can reason across Workspace apps without requiring code, and Google has separately introduced Workspace Flows for automating multi-step processes like customer-service request handling. Both are built on the Model Context Protocol, the same open standard Anthropic originally developed and that Google has since adopted.

Tools like Canva Magic Studio, Gamma, Tome, and Prezi occupy a narrower lane. They compete with Cowork’s PowerPoint-building skill specifically — generating slide decks from a prompt — but none of them attempt the broader cross-application task delegation that defines Cowork’s pitch: managing email, calendars, Teams messages, and enterprise search alongside document creation. No evidence was found that any of these companies has publicly responded to Cowork’s mobile or plugin expansion specifically.

Limitations and Open Questions

A few gaps are worth keeping in mind. Plugin and skill management isn’t yet supported under Microsoft Purview Information Barriers, the compliance feature some regulated organizations use to wall off information between teams; in tenants where that feature is active, certain plugin and skill uploads are blocked outright. During the Frontier phase, EU-based tenants were required to explicitly opt in to using Cowork, a reflection of the region’s data-residency rules — though no broader regulatory investigation or legal action involving Cowork was found in available reporting.

More broadly, independent verification of Cowork’s real-world performance is thin. The adoption figures, cost comparisons, and productivity anecdotes so far all trace back to Microsoft’s own communications. That’s not unusual for a product this new, but it means claims about Cowork’s effectiveness — however specific-sounding — should currently be read as the company’s account of its own product, not as independently confirmed results.

Conclusion

Copilot Cowork’s trajectory over the past several months is a reasonably clear story once the dates are untangled: a preview that became a Frontier-only pilot, which then added mobile access and plugins for testers, before finally opening up to general availability in June 2026. What’s actually new to the general public isn’t PowerPoint generation — that’s been part of Cowork from the start — but the ability to delegate that kind of work from a phone, and to extend the system with plugins beyond what Microsoft built in.

What remains genuinely uncertain is how Cowork performs outside of Microsoft’s own case studies, how complete its plugin ecosystem actually is right now, and how enterprises will weigh its usage-based billing against more predictable software costs as adoption scales. Anyone evaluating Cowork today is best served by treating Microsoft’s public documentation as the floor for what it can do, and its adoption and savings figures as claims still awaiting outside scrutiny.

Frequently Asked Questions

Is Copilot Cowork available on mobile? Yes. Cowork runs inside the existing Microsoft 365 Copilot app for iOS and Android. It first appeared there in preview form in May 2026 and became broadly available with Cowork’s general availability in June 2026. There’s no separate app to install.

What is the difference between Copilot Cowork’s built-in skills and its plugins? Built-in skills — including PowerPoint, Word, Excel, PDF, email, and scheduling — are native capabilities that have been part of Cowork since its earliest preview. Plugins are separate, optional packages distributed through the Microsoft 365 App Store that add new skills or connect Cowork to outside systems and data sources.

Is Copilot Cowork generally available or still in preview? It’s generally available worldwide for work and school Microsoft 365 accounts as of June 16, 2026. Cowork for personal Microsoft accounts remains in preview.

Does Copilot Cowork use Anthropic’s Claude models? Yes. Microsoft has said Cowork’s platform draws on technology behind Anthropic’s Claude Cowork and Dispatch tools, and its general-availability model picker includes Claude models alongside OpenAI’s GPT-5.5 and an automatic model-selection option.

What plugins are currently available for Copilot Cowork? Microsoft has named a handful of examples, including integrations with Power BI (via Fabric IQ) and Dynamics 365, along with third-party connectors for tools like Miro, monday.com, LSEG, and S&P Global Energy — some announced as “coming soon” in May 2026. A complete, current list of every available plugin was not found in public documentation.

How is Copilot Cowork different from Copilot Chat? Copilot Chat answers questions and helps with single-step tasks, largely in a back-and-forth conversation. Cowork is built to take a broader outcome, break it into steps, and carry those steps out across a user’s apps and data, checking in for approval as it goes.

How does Copilot Cowork compare to Google Workspace’s agentic tools? Google Workspace Studio and Workspace Flows offer a comparable pitch — agents that can reason across apps and automate multi-step processes without coding — and both are built on the Model Context Protocol. Presentation-specific tools like Canva, Gamma, Tome, and Prezi compete only with Cowork’s narrower PowerPoint-building skill, not its broader task-delegation scope.