Quickfire! Your 6 Must-Have Takeaways

• Claude is additive, not a replacement. You still need the Copilot licence for AI features in Word, Excel and Outlook.

• Claude's M365 connector is read-only and runs outside your tenant. Cowork runs end to end inside your tenant.

• In Microsoft’s own June 2026 testing, Cowork came in around 30–40% cheaper per prompt than Claude with the M365 connector, using the same underlying model.

• The real decision is about data and governance, not just headline price. Decide what kind of work goes where, and how that work is controlled.

• The connector makes governance more important, not less. It makes it easier to move tenant data into a personal account if you are not careful.

• It is a fair question, and we hear it often: Claude now connects to Microsoft 365, and a flat Claude subscription can look cheaper than Cowork’s credits, so why not just use Claude? It deserves a clear, honest answer.

  The short version: for most business tasks they can do much the same work, so the real questions are cost, control and where your data sits, not raw capability. This is not “Claude bad, Cowork good”. We rate Claude highly, and it is one of the models running under Cowork’s bonnet. The point is to use the right tool for the right jobs, with the right controls around it.

Find out where Cowork could save your business the most time with our free AI Readiness conversation:

Book My Free AI Readiness Conversation With labdesk

What's the difference between Claude and Cowork?

For most business tasks – drafting, building documents and decks, analysis, content – they can do much the same thing. What changes is how you work with them, where they run, and a few added features. Claude direct is a chat assistant you talk to. It is strong on writing and creative work, and it brings features Cowork does not, like Claude Code and Claude Design for graphics. It can now read from your Microsoft 365 through a connector. Cowork is an agent built into Microsoft 365. You hand it a whole task, and it carries that task out across your apps and returns a finished result, inside your tenant.

Claude is an expansion, not a replacement

The first point to be clear on is this: you cannot usually drop your Copilot licence and “just buy Claude” and expect the same thing. For most organisations, that trade does not hold up.

Your Microsoft 365 Copilot licence is what brings AI directly into the tools your team already uses every day: Copilot in Word, Excel, PowerPoint, Outlook and Teams. It also unlocks the Work IQ context engine, pre-built agents like Researcher and Analyst, and the platform to build your own. Claude direct does not do that. It is a separate chat surface; it sits alongside your documents and spreadsheets, not inside them.

So for most clients, Claude is additive – something you run as well as Copilot, not instead of it. And Cowork itself depends on you having the Copilot licence in the first place. The “saving” people picture when they imagine “just Claude” usually means giving up the in-app experience, the grounding in your own data, and the governed surface that come with Copilot.

Yes, Claude connects to SharePoint – but read-only, and outside your tenant

Claude now connects to Microsoft 365. Through Anthropic's connector it can search and analyse your SharePoint and OneDrive documents, your Outlook email, and your Teams chats and meetings, so you can ask it to find a deck or summarise a thread without uploading files manually. That is genuinely useful.

Two details matter, though. First, it is read-only: Claude can look at and reason over your content, but it cannot build, change, write back or run a workflow in your tenant. Second, your data is fetched out to Claude to be processed, so it leaves your Microsoft 365 boundary – and enabling the connector means a Microsoft Entra administrator granting consent at the tenant level.

Cowork works the other way round. It operates end to end – it builds the deck, writes the workbook, runs the multi-step job – and it does this inside your tenant, under your sensitivity labels, audit logging, eDiscovery and data-loss rules. “Claude can see my SharePoint” and “Claude can safely do governed work on my SharePoint” are two very different statements.

Is Claude actually cheaper than Cowork? 

A flat Claude subscription can look cheaper than usage-based credits, and for one person doing contained work it often is. But the comparison is rarely like-for-like:

Individual seats have caps. Claude Pro and Max are personal plans with usage limits; sustained, automated or heavier work can hit those ceilings.

Business use needs business plans. For admin controls, single sign-on and audit you would move to Claude Team or Enterprise, which narrows the gap with a Copilot licence.

You usually still need Copilot anyway. As above, Claude is typically additive – so you are adding a cost, not directly swapping one for another.

On equivalent work, Cowork tested cheaper. Microsoft's own June 2026 testing found Copilot Cowork 30–40% cheaper per prompt than running Claude with its Microsoft 365 connector, using the same top model.

That last figure comes from Microsoft's internal testing across a set of light, medium and heavy tasks, and real costs will vary with your specific usage – but it underlines the point: for governed, agentic work over your own data, “Claude is cheaper” is not a given. Sticker price and total cost are not the same thing.

Understanding how Claude and Cowork quietly control your data

Once you set the headline price to one side, the real question is about your data. Where the work is non-sensitive and can safely live outside Microsoft 365 – for example, heavy creative tasks, or a recurring piece of content that spans several workstreams and documents – a dedicated Claude seat can be very good value. For anything sensitive, regulated, or that has to stay auditable inside your business, the work belongs in your tenant, which is where Cowork keeps it.

There is another consideration. Because the connector makes it easy to pull SharePoint and Outlook data into a personal Claude account, it can make shadow AI more likely, not less – in effect, a direct route out of your tenant. That makes a clear, governed policy more important, not less. The honest answer is not “do not use Claude.” It is “decide, deliberately, which tool handles which data, under which controls.”

So which should you use?

In practice, most businesses will end up using both. And much of the day-to-day research and summarising people reach for an AI tool to do is already Copilot’s job, inside your apps – so the more useful question is about the work that sits outside that. A rough guide:

• Reach for Claude direct for heavy creative work – including design and code – and for large, multi-workstream pieces of content you produce regularly, where the data is not sensitive and can be processed outside Microsoft 365. For a genuinely heavy, regular user, a flat seat is also more predictable on cost than Cowork's metered credits, which rise with usage.

• Reach for Cowork to build and automate deliverables over your tenant data, for anything sensitive or regulated, and for work that has to remain governed and auditable.
• Run both, on purpose. The real skill is matching the work to the tool, and setting the guardrails so neither becomes a back door.

A word from our Director

Your Next Step after getting to grips with Cowork

Cowork is a highly capable tool. But like any AI, it is only ever as safe as the foundations you put under it. Access, data, security, and ways of working all decide whether Cowork is a trusted teammate across the business, or something people tiptoe around.

That foundation is what we help you build.

The easiest place to start is a free, tailored AI Readiness Conversation with a member of the labdesk team. Together, we look at how your team actually works today, where tools like Copilot and Cowork can save the most time, and what needs to be in place so they do it safely.

If it is useful and you want to go further, our Copilot Enablement and Readiness Workshop takes it end to end.

Over several sessions together, we:

• Survey how your business really runs (tools, tasks, meetings, focus time, ownership).
• Review your Microsoft 365 data and setup so Copilot and Cowork sit on solid, governed ground.
• Run a security and risk assessment across 17 core items, including identity, devices, sharing, sensitivity labels, governance and Secure Score.

You leave with clear findings, a simple picture of your current risk, and a phased roadmap from today's foundations to being genuinely ready for AI. Written in plain English, not tech-speak, and yours to keep and act on however you like: run it in-house, hand it to your IT team, or have labdesk deliver it alongside you.

For most organisations, the business case is already there. In a 100-person company, a 20-seat Copilot pilot can deliver around £110,000 of time value per year on roughly £6,000 of licences… provided the foundations are right. The workshop makes sure the work you are already doing on Microsoft 365 counts toward that AI readiness at the same time.

And for qualifying projects, there is up to £1,000 of Microsoft funding available if you choose to move ahead.

If you would like your AI foundations in place before you roll out tools like Cowork to everyone, you can book your free readiness conversation here:

→ Book My Free AI Readiness Conversation With labdesk