Microsoft 365 Copilot vs ChatGPT for Businesses
By CodexierPublished 6 min read
Both tools write emails, summarise documents and draft proposals well enough that a demo will not settle the question. What decides it for a Swedish company is where your files and mail already live, which admin and data controls you need for GDPR, and whether a per-user licence for everyone makes sense. This guide compares them on those three axes and ends with a trial plan that gives a real answer in two weeks.
Where your documents live decides a lot
The biggest practical difference is grounding. Copilot sits inside the Microsoft Graph, so when you ask it to summarise last week's customer thread it already knows which thread, who was in the meeting and which SharePoint file was attached. ChatGPT only knows what you give it: you upload the file or paste the mail. That is more work per task, but it works identically whether your files are in Google Drive, Dropbox or a file server nobody has migrated yet.
Admin and data controls
For a Swedish company the questions are always the same: is the data used for training, where is it processed, can the admin restrict usage, and is there a data processing agreement a GDPR review will accept. Both vendors answer well on paid business tiers and badly on free consumer accounts, which is why the tier matters more than the brand.
| Control | Microsoft 365 Copilot | ChatGPT Team / Enterprise |
|---|---|---|
| Training on your data | No, under the Microsoft 365 commercial terms | No on business tiers; consumer accounts differ |
| Inherits existing file permissions | Yes, Copilot only surfaces what the user could already open | Only for sources you explicitly connect |
| Admin can restrict who has access | Yes, per licence and via Purview policies | Yes, per workspace seat and admin console |
| Data processing agreement | Part of the Microsoft 365 DPA you already signed | Separate DPA offered for business tiers |
Terms change several times a year. Read the current data-processing terms yourself before signing and keep a dated copy with your GDPR records.
Licence models compared
Both are priced per user per month on an annual commitment, and both list prices publicly, so we will not quote numbers that will be out of date by the time you read this. The mechanics matter more than the exact figure.
- Copilot is an add-on: every user needs a qualifying Microsoft 365 business licence underneath. The add-on costs about as much as the base licence, so the total per heavy user roughly doubles.
- ChatGPT Team is a standalone seat with a minimum number of users, billed to the workspace. It does not require any other subscription.
- Both give you far less value if only a few people actually use them. Count active users after the trial, not headcount.
The honest rule for a company of ten to fifty people: licence the people who touch documents and mail all day, not everyone, and revisit the list quarterly. A licence nobody opens is the most common waste we find in an AI integration audit.
Typical tasks for each
Copilot: meeting follow-up
Teams meeting recap, action items assigned to the right people and a draft follow-up mail, all without leaving Outlook. This is its strongest single use.
ChatGPT: long-form drafting
Proposals, policies, tender answers and rewriting in a specific tone tend to come out stronger, particularly in Swedish.
Neither: process automation
Sorting an inbox, updating the CRM, sending reminders. That is a workflow automation built around a model, not a chat licence.
Running a fair two-week trial
Most trials fail because everybody plays for three days and nobody measures. Run it like a small project instead.
- Pick five recurring tasks that cost real hours: meeting notes, quote drafts, customer replies, the monthly report.
- Give the same tasks to three people on each tool for two weeks, alternating weeks if you can.
- Log minutes saved per task and how many outputs were used without heavy rewriting.
- Have your data protection lead read both vendors' current business terms in week one.
- Decide in week three: which tool, for which people, and what the written usage policy says about customer data.
If the trial shows that the real win is one repeatable process rather than general assistance, stop before buying seats for everyone. That is the point where an audit of what to automate first pays for itself, and where a 15-minute call is quicker than another month of trial.
When you should not buy either yet
You do not need a business licence if two people occasionally draft a mail with a consumer account and never paste customer data into it. You do not need our help choosing if your IT partner already manages your Microsoft tenant well: ask them to switch on Copilot for a pilot group. And you should not buy any AI seat while your file permissions and customer data are uncontrolled, because both tools will make that problem visible faster than they make anyone productive. If a sorted inbox is the real goal, read our guide to AI triage of a shared inbox first.
Frequently asked questions
Is ChatGPT allowed under GDPR for a Swedish company?
On a business tier with a signed data processing agreement, no training on your data and a documented purpose, yes, like any cloud processor. The problems come from free consumer accounts, unclear purposes and staff pasting personal data without a policy. Write the policy before the rollout and keep the DPA with your GDPR records.
Does Copilot see everything in our SharePoint?
It sees exactly what the user asking could already open. Many companies have folders shared with Everyone that nobody has audited for years, so review sharing settings before enabling Copilot, otherwise the first week of use becomes a permissions clean-up.
Can we use both tools?
Yes, and many small companies do: Copilot for the few people living in Outlook and Teams all day, ChatGPT Team for those who need a general assistant or a shared custom assistant. Just make sure the usage policy names both and says where customer data may go.
Not sure which tasks are worth licensing for?
Fifteen minutes with an engineer: you describe how your team works today, we tell you whether a Copilot pilot, a ChatGPT workspace or a small automation is the better first step, and what it would cost.
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