ChatGPT Business vs Microsoft Copilot vs Claude Team: which should a small business pick?
Pick the one that sits closest to where your work already lives. If your team spends its day in Outlook, Teams, Word, Excel, and SharePoint, start with Microsoft Copilot, because it works inside those apps with the files each person already has access to. If you run on Google Workspace, or on a mix of tools, ChatGPT Business and Claude Team are both strong general assistants that connect to your email, files, and other apps. At list price, the standard seats on all three cost roughly the same, so price shouldn't decide it. What matters more is choosing one, putting it on company accounts, and testing it on a few real tasks before you buy seats for everyone.
Prices below are list prices for US customers as published by each vendor on October 17, 2026. They change often, so check the linked pages before you buy.
The short comparison
| Microsoft Copilot (Copilot Business) | ChatGPT Business | Claude Team | |
|---|---|---|---|
| Best fit | Companies already on Microsoft 365 | Google Workspace or mixed-tool companies; broad general use | Heavy writing, long documents, and analysis; Google or mixed tools |
| Works inside | Word, Excel, PowerPoint, Outlook, Teams | Its own app, with connectors to Google Workspace, Microsoft 365, Slack, and more | Its own app, with connectors plus add-ins for Microsoft 365 and Outlook |
| List price, standard seat | $21 per user per month, annual commitment, as an add-on to an eligible Microsoft 365 Business plan. If you buy by Dec 31, 2026, Microsoft discounts the first year to $18, then it renews at $21 | $25 per user per month billed monthly, or $20 billed annually | $25 per user per month billed monthly, or $20 billed annually |
| Heavier-use seat | None listed on the pricing page | Premium seat, $125 monthly or $100 annually | Premium seat, $125 monthly or $100 annually |
| Minimum | No minimum; up to 300 users | 2 seats | 2 seats; up to 150 |
| Trains on your business data by default | No | No | No |
Sources: Microsoft Copilot business pricing, Microsoft Copilot Business FAQ, Microsoft Copilot data and privacy, OpenAI business pricing, ChatGPT Business billing, Claude pricing, Claude Team plan.
Microsoft also sells bundles that include Copilot: Microsoft 365 Business Standard with Copilot at $23.50 per user per month and Business Premium with Copilot at $32, both paid yearly. In 2026, Microsoft renamed Microsoft 365 Copilot to Microsoft Copilot, so you will see both names for a while.
When Microsoft Copilot is the right first choice
If most of your work already happens in Microsoft 365, Copilot has an edge: it can draft in Word, summarize a long Outlook thread, pull together notes from a Teams meeting, and work with spreadsheets in Excel, without anyone copying text into a separate window. It also only shows each person content they already have permission to see.
That last point cuts both ways. In many small businesses, SharePoint and OneDrive sharing has grown messy over the years. If a folder of HR files or salary spreadsheets is open to "everyone," Copilot can surface it to anyone who asks the right question. Before turning Copilot on widely, have whoever manages your Microsoft 365 (often your IT provider) review who can see what. It usually takes an afternoon. Skipping it is how a salary spreadsheet ends up in someone's Copilot answer.
Many Microsoft 365 business plans also include Copilot Chat at no extra cost. It's a reasonable way for people to get used to the idea. The paid license is what puts Copilot inside the apps and connects it to your work content.
When ChatGPT Business is the right first choice
ChatGPT Business suits companies that work in Google Workspace, use a spread of tools, or want one assistant that people will use for many different jobs. It connects to Google Workspace, Microsoft 365, Slack, and other apps, and it supports shared projects so a team can keep the same instructions and reference files in one place. Admins get central billing, single sign-on, and usage reporting.
It is also the tool your staff are most likely to have tried already on personal accounts. That familiarity helps adoption. Moving people onto a company workspace also brings that use under your own rules.
When Claude Team is the right first choice
Claude Team works well for teams that do a lot of careful writing and reading: proposals, policies, contracts to review, long reports, and analysis of documents. Like ChatGPT Business, it supports shared projects, connectors to common business tools, single sign-on, and central admin. It also offers add-ins for Microsoft 365 and Outlook, so Microsoft shops aren't locked out.
Which of ChatGPT and Claude writes "better" changes from one model release to the next, and it depends heavily on the task. Don't decide based on someone else's opinion, including ours. Run both on your own work for a week and let the people who will use it choose.
A simple way to decide in two weeks
- Pick three to five real, repeating tasks from the people who do them. Good candidates: drafting routine email replies, summarizing meetings, pulling details from PDFs into a sheet, and writing the monthly report narrative.
- Write down how long each task takes today.
- Buy the smallest number of seats the vendor allows for one or two candidate tools (two seats for ChatGPT or Claude; Copilot has no minimum). Use company accounts, never personal ones.
- Have the same two or three people use each tool on the same tasks for a week.
- Compare time, quality, and which tool people actually reached for without being reminded.
- Roll out the winner to the people who will use it. Not everyone needs a seat on day one.
If you are on Microsoft 365, it is reasonable to test only Copilot first. If it handles your tasks, the in-app convenience is hard to beat.
Common mistakes
- Buying seats for everyone before anyone knows what to use it for. Usage drops off fast without real tasks.
- Leaving staff on personal free accounts. You lose control over where company information goes and what happens when someone leaves.
- Turning on Copilot without checking file permissions first.
- Treating the purchase as the project. The tool is the easy part. The time savings come from picking tasks, writing short guides, and checking that people use it.
Questions owners ask
Can we just use the free versions?
For company work, we don't recommend it. Free and personal plans don't give you admin control, and their data settings differ from business plans. A business plan also means accounts stay with the company when someone leaves.
Do these companies train their AI on our data?
All three vendors state that their business plans don't use your business content to train their models by default. Read the privacy pages linked above, and still set a short rule about what staff should never paste in.
Can we use more than one?
Yes, and some companies end up there. Start with one so training and rules stay simple, then add a second only if a specific team has a clear need for it.
What if we pick the wrong one?
ChatGPT and Claude Team can be billed monthly, so switching costs little beyond retraining. Copilot Business requires an annual commitment, which is another reason to test before buying widely.
Need help choosing and setting it up?
Armature helps small and midsize businesses in Washington pick the right AI plan, set it up on company accounts, and train staff on their real tasks. We don't resell software or take a cut; you buy directly from the vendor in your company's name. Email [email protected] for a free 30-minute call.