Copilot vs ChatGPT for business, and where Claude fits

Most "Copilot vs ChatGPT for business" comparisons are written by someone selling one of them, or selling something that sits next to both. This one isn't. I checked every plan name, price and admin feature below against OpenAI's, Microsoft's and Anthropic's own pages on 10 October 2026.

The headline is a little dull. At the entry business tier, all three cost roughly the same per seat. The decision lives in your licences and your admin console.

The short answer: if your business already runs on Microsoft 365 and most of the work happens in Outlook, Teams, Word and Excel, start with Microsoft 365 Copilot, which works across your email, files and meetings. If you want a standalone assistant that isn't tied to one office suite, ChatGPT Business and Claude Team both start at $20 a user a month on annual billing. Trial both on real work first.

Key points (US list prices, per user per month, excluding tax):

• ChatGPT Business: $20 billed annually, $25 monthly, for teams of 2 to 200 (OpenAI)
• Claude Team: $20 billed annually, $25 monthly, for teams of 2 to 150 (Anthropic)
• Microsoft 365 Copilot Business: $21 billed annually ($18 on a promotion running to 31 December 2026), and you must already have an eligible Microsoft 365 plan (Microsoft)
• None of the three trains its models on your business data by default on these plans

Copilot vs ChatGPT for business: what's the real difference?

Where they live.

Microsoft 365 Copilot is built into the Microsoft apps your staff already have open. Its party trick is reach: it can draw on the email, documents, chats and meetings each user already has permission to see, and act inside Word, Excel, PowerPoint, Outlook and Teams. Microsoft has also started renaming things. Its own documentation now notes that Microsoft 365 Copilot is called Microsoft Copilot, though the pricing pages still use the longer name, so expect some confusion in quotes and invoices.

ChatGPT Business is a separate workspace. People go to it, bring their work in, and take the output away. It now has connectors to internal tools and add-ins for Excel, Word, PowerPoint and Google Sheets, so the gap is narrower than it was. It also doesn't care whether you run Microsoft 365, Google Workspace or a mix of both.

Claude Team is closer to ChatGPT in shape: a standalone workspace with connectors, including one for Microsoft 365, plus Anthropic's coding and desktop agent tools bundled into the plan.

One wrinkle worth knowing. Copilot is no longer a single-model product. Microsoft offers Anthropic's Claude models inside Copilot as well as OpenAI's, which means "Copilot or Claude" is sometimes a false choice. More on the data protection side of that below.

How much do ChatGPT, Copilot and Claude cost for business?

Here are the business plans as listed on each vendor's US pricing page on 10 October 2026. Prices are in US dollars per user per month and exclude tax. UK and EU prices differ and are set locally, so check your own region's page before you budget.

Two things the per-seat price hides.

First, Copilot is an add-on. Microsoft states that a separate qualifying Microsoft 365 licence is required, so the real cost per head is the Copilot price plus whatever you already pay for Microsoft 365. If you already pay for the qualifying licence and would retain it anyway, compare the incremental Copilot charge. Include the full licence cost in a new purchase decision. If you don't, the comparison changes completely.

Second, usage. Claude Enterprise charges a seat fee plus usage at API rates, which means a heavy month costs more than a quiet one. OpenAI also lets Business and Enterprise customers buy extra credits for more access. Budget for the seats you know and the usage you don't. I go into that in how much AI implementation costs.

Which one is safest for company data?

On the business tiers, all three make the same headline promise: your prompts and outputs aren't used to train their models by default. The consumer plans are different. OpenAI's own pricing page shows that content on Free, Go, Plus and Pro can be used for training unless the user opts out, which is the strongest argument for buying business seats instead of letting staff expense personal accounts.

Below the headline, the admin features differ more than the marketing suggests:

• ChatGPT Business has SAML SSO and SOC 2 Type 2, but no SCIM user provisioning, no Enterprise Key Management, no compliance API and no data residency. Those sit in ChatGPT Enterprise, which offers data residency in ten regions including the EU, UK and UAE.
• Claude Team has SSO, central billing, usage analytics and admin controls over connectors, but SCIM, audit logs, the compliance API, custom retention and role-based access are Enterprise features.
• Microsoft 365 Copilot inherits your Microsoft 365 tenant: identity, permissions and the compliance tooling you may already run. Microsoft says prompts and responses stay within the Microsoft 365 service boundary under its enterprise data protection terms, with support for the EU Data Boundary.

Two cautions on the Microsoft side. Copilot sees what each user can see, so if your SharePoint permissions are a mess, Copilot will surface the mess faster. Tidy access before you switch it on. And Anthropic's models inside Copilot are a separate case: Microsoft's documentation says they're currently excluded from the EU Data Boundary and are switched off by default for EU, EFTA and UK tenants, so an admin has to opt in (Microsoft Learn).

The rule of thumb: if you need SCIM, audit logs or a guaranteed data region, you are shopping for an enterprise plan, whichever vendor you pick. A written AI policy matters as much as the plan. See a practical AI governance framework for SMEs.

Is Claude better than ChatGPT for business?

It depends on the work, and anyone who gives you a flat yes or no is selling something.

On paper the two business plans are almost mirror images: same entry price, same premium seat price, SSO on both, SCIM held back for enterprise on both. The differences that matter show up in use. ChatGPT bundles a wider spread of consumer-style features such as image creation, voice and a large plugin catalogue. Claude Team bundles Claude Code and Claude Cowork, Anthropic's coding and desktop agent tools, which matters if you have developers or people who live in long documents.

Model rankings change every few months, so I wouldn't pick a vendor on this quarter's benchmark table. Pick on fit with how your people actually work, then review once a year. Both vendors let you start month-to-month at $25 a seat, which makes a real trial cheap.

Do you need more than one?

Possibly, though most small businesses shouldn't start there.

One failure pattern is a Microsoft 365 business that switches on Copilot for everyone, then finds a handful of people (usually analysts, marketers or developers) who want a standalone tool as well. Giving those few a second seat can be sensible. Giving everyone two is usually waste.

The other common mistake runs the opposite way: no business plan at all, and a dozen staff on personal accounts with company data in them. That's the most expensive option of the lot, because the bill arrives later, as risk. If you're weighing a packaged tool against something built for you, build vs buy AI covers when off-the-shelf stops being enough.

My take

I use AI every day in my own consulting work, for research, synthesis, first drafts and repeatable workflows, and the tool is rarely the bottleneck. The bottleneck is whether people know what to ask it, what to check and what never to paste in.

So my view on Copilot vs ChatGPT for business is fairly unglamorous. If you're a Microsoft shop with clean permissions, Copilot is the path of least resistance and the integration is genuinely useful. If you're not, or your people live in a mix of tools, ChatGPT Business and Claude Team are close enough on price and controls that a fortnight's trial on real work should settle it. Either way, spend at least as much effort on training as on licences. A $20 seat used badly costs more than a $30 seat used well. I cover what good training looks like in AI training for employees.

How to choose between ChatGPT, Copilot and Claude

1. Write down five real tasks. Actual work from actual roles: summarising a client thread, drafting a proposal, cleaning a spreadsheet, preparing a board pack.
2. Check your licences. If you already pay for an eligible Microsoft 365 plan, Copilot is an add-on. If not, price the full stack.
3. List your must-have controls. SSO, SCIM, audit logs, data region, retention. Check each required control against the exact plan. SSO is available on the business/team tiers listed here; some other controls require Enterprise.
4. Fix permissions before Copilot. Review who can see what in SharePoint and OneDrive first.
5. Run a two to four week trial with a small group on monthly billing, using the same five tasks on each tool you're considering. Treat it like an AI proof of concept, with a clear pass mark.
6. Measure time saved and quality, not enthusiasm. Use comparable tasks and include checking time; note other changes that could explain the difference. See how to measure AI ROI.
7. Write the policy, then roll out. What can go in, what can't, who reviews outputs, and who owns the admin console.
8. Move to annual billing only once usage has settled.

Use the same trial pack

Compare the exact plans you could buy, using the same authorised source material and tasks. Record output quality, correction time, access problems and usage limits. Keep confidential material out until the processing is approved. A tool that wins a writing task may lose on spreadsheet work; buy seats by role where the evidence supports it.

Frequently asked questions

Is Microsoft Copilot the same as ChatGPT? No. They're separate products from different companies, and Copilot now offers models from both OpenAI and Anthropic. Copilot works inside Microsoft 365 with access to your organisation's data, while ChatGPT is a standalone workspace you bring your work into.

Can I buy Microsoft 365 Copilot without Microsoft 365? No. Microsoft states that a separate qualifying Microsoft 365 licence is required for the Copilot add-on. The Copilot Business add-on is for existing Microsoft 365 Business customers with up to 300 users.

Does ChatGPT Business use my data for training? Not by default. OpenAI says it doesn't train on business data on ChatGPT Business and Enterprise, but consumer plans such as Free and Plus can be used for training unless the user opts out.

Is ChatGPT Business or Claude Team cheaper? They're priced the same at list: $20 a user a month billed annually or $25 monthly for a standard seat, and $100 or $125 for a premium seat. Claude Team caps at 150 users, after which you'd move to Enterprise.

Which is best for a small business that uses Google Workspace? Copilot's main advantage depends on Microsoft 365, so it's a weaker fit. ChatGPT Business and Claude Team are both standalone and worth trialling side by side.

Sources

All vendor pages checked on 10 October 2026. Prices change often, so recheck before you buy.

• ChatGPT Business and Enterprise pricing, OpenAI
• ChatGPT plan comparison (Free, Go, Plus, Pro), OpenAI
• Microsoft Copilot for business pricing, Microsoft
• Microsoft 365 Copilot for enterprise pricing, Microsoft
• Anthropic models in Microsoft Online Services, Microsoft Learn, updated 18 September 2026
• Claude plans and pricing, Anthropic

If you're choosing an AI assistant for your team and want an independent view on fit, controls and rollout, let's talk.