Microsoft now has a lot of AI tools, and honestly, it’s easy to lose track. Copilot Chat, Copilot Cowork, Microsoft Scout, plus Researcher and Analyst agents tucked inside Copilot Chat itself – it’s all a bit overwhelming. All are capable of overlapping tasks.
We’ve written in depth about what Copilot Cowork is elsewhere, so we won’t go into too much detail here. Basically, Cowork is the agentic system inside Microsoft 365 Copilot that takes a task from description to done, planning it, executing it across your apps, and pausing for your approval on anything sensitive.
Today we’ll cover what AI tool you should you reach for, and when. If you need a crash course in Cowork, we’ve also included some must read blogs below.
Copilot Chat: free vs. paid
If you’re relying on Microsoft’s own messaging to give you the scoop, and you’re not familiar with Copilot, here’s something which might be confusing. You’ll often see ‘Copilot Chat’ used as a catch-all label, when in reality there are two distinct experiences hiding underneath it.
Free Copilot Chat is included with most Microsoft 365 subscriptions at no extra cost. It’s grounded in the web, plus whatever file you upload or have open. It’s genuinely useful for drafting, brainstorming, and quick Q&A, but it has no visibility into your organisation’s actual data.
Paid Microsoft 365 Copilot is the licensed add-on, which benefits from Work IQ. This is what lets Copilot ground its answers in your emails, files, meetings, and calendar, not just the open web. So, when you see Microsoft talk about ‘Copilot Chat’ they are in fact usually talking about the paid version (unless specified). We’ve covered this split in full elsewhere so check out our blog on Microsoft 365 Copilot Business for the breakdown for SMEs.
Our decision guide: What to use when
Microsoft 365 Copilot Chat (paid)
This is your fastest option, and it should be your default for anything single-step: drafting an email, summarising a document, brainstorming ideas, getting a quick answer grounded in your own data. If the task fits in one conversation, use Chat.
Microsoft 365 Copilot in the app (inside Word, Excel, PowerPoint, Outlook, or Teams)
This is the right call when you’re working on one specific piece of content. Drafting in the actual email thread, editing the document, working from the Teams meeting transcript. It’s more precise than Chat because it’s grounded in the exact thing you’re looking at, not a general prompt.
Copilot Cowork
This credit-consuming option is for when the job spans more than one app and produces more than one output. For example, you’re working on a small project where you need to create a meeting agenda, send a calendar invite, and draft a supporting deck, all from a single request. Cowork plans the work, carries it out across your Microsoft 365 estate, and checks in with you before anything sensitive happens. You still must ask it to start, because it’s reactive, not proactive, but once it’s running, it can work through the task for minutes or hours without you babysitting it.
Microsoft Scout
This is the one which is genuinely proactive because it doesn’t wait to be asked. Positioned as an always-on personal assistant, Scout sits across your inbox, calendar, files, and the web, watching for stalled decisions, gaps in meeting prep, or scheduling conflicts, and acting on them without a fresh prompt every time. It’s still early days (Scout is currently in Frontier, so access is limited) but it’s worth understanding now, because it represents a real shift from ‘AI you ask’ to ‘AI that just gets on with it’. We’ve gone into more depth on this shift, and the technology underpinning it, in our Microsoft Build 2026 roundup if you want the fuller picture.
Put simply: Chat is simpler and faster, Cowork takes longer but delivers more outputs, and Scout is the most autonomous of the three. One app for one file. Cowork for an entire process. Scout to stay ahead of your day before you’ve even thought to ask.
A word on research: Cowork vs. the Researcher Agent
If you’re using any of these tools for company or market research specifically, there’s an extra layer of nuance worth knowing. Cowork produces a detailed, structured output, closer to a consultant’s brief, and it’s upfront about what it couldn’t find, which is important for accuracy. The Researcher agent within Microsoft 365 Copilot is faster and more concise, better suited to scanning several companies quickly, though with a slightly higher risk of overreach on partial information. We’ve covered this comparison properly in a previous piece on what Copilot Cowork can do – worth a read if research is a regular part of your workflow.
How much is it going to cost you?
Nobody likes finding out a tool they’ve been happily using is racking up charges, so let’s be straight about it. Cowork and Scout usage doesn’t just depend on your Copilot licence, it also draws on Copilot Credits, a separate, usage-based meter.
Microsoft says that agent use requires credits, but to clarify, credits are used when an agent conducts autonomous or background work, is used outside your organisation, or requires non-standard models that flips the meter on.
None of this happens by accident: an admin has to deliberately set up billing first, either linking Azure or buying prepaid credit packs, and configure a billing policy before any metered usage is even possible. We go into the full mechanics, including how to set this up properly, and roughly how much Cowork might cost you in credits in our guide here.
Bonus for our Dynamics 365 customers
If you’re already using Dynamics 365, there’s another reason to pay attention to Cowork. Its Dynamics 365 plugins let it pull real records, understand your business data, and trigger next steps across sales, service, finance, HR, and operations without you having to jump between systems manually. This became generally available on June 16 for Dynamics 365 Sales, Customer Service, and ERP apps. We’ve written a full breakdown of what this integration actually does and how to get the most out of it in our Copilot Cowork and Dynamics 365 use cases blog.
Our verdict
Use Microsoft 365 Copilot Chat for quick, single-step work. Use Cowork when a job spans multiple apps and multiple deliverables. Use Scout when you want something working in the background before you’ve even asked.
But before you go, please read this…
Before enabling Microsoft Copilot, it is worth carrying out an AI readiness assessment to check that your permission structures across SharePoint and OneDrive are appropriate, that sensitivity labels are applied to confidential data, that audit logging is enabled, and that your team understands what Copilot and Cowork can access. Cowork is off by default, meaning an administrator has to enable it deliberately. That is a sensible moment to pause and check the foundations are in place first.
For more information about booking an AI readiness assessment, contact our team on 01782 916920.