“Which AI should we use?” is the most common question businesses ask once they decide to take AI seriously. The honest answer is that all four of the leading assistants, ChatGPT, Claude, Gemini and Microsoft Copilot, are highly capable. For most everyday business work, the differences between them matter less than how well each one fits the tools you already use, and whether you buy a proper business plan.
This guide compares the business plans side by side, explains where each one shines, and includes a quick picker to point you to a sensible starting choice.
Key takeaways
- Start with your ecosystem: Microsoft 365 → Copilot, Google Workspace → Gemini. Both work inside the apps your team already uses.
- ChatGPT and Claude are excellent standalone assistants, and many businesses use one alongside Copilot or Gemini.
- Business plans from all four don’t train on your data by default. Free consumer plans are a different story.
- Most business plans cost about $20 per user per month (or are bundled with your productivity suite). Run a pilot before buying for everyone.
Find your starting point
Interactive
Which AI assistant fits your business?
1. What does your company use for email and documents?
2. What will people mostly use it for?
Business plans compared
| ChatGPT Business | Claude Team | Gemini (Workspace) | Microsoft 365 Copilot | |
|---|---|---|---|---|
| Price | $20/user/mo annual $25 monthly | $20/seat/mo annual $25 monthly Premium seat: $100 / $125 | Included in Workspace Business Standard: $14/user/mo | Copilot Business add-on: $21/user/mo (annual) or bundled with Business Standard: $23.50 |
| Team size | 2+ users | 2–150 seats | Any Workspace plan | Business tier: up to 300 users |
| Trains on your data? | No, by default | No, by default | No (Workspace data protections) | No (Microsoft 365 data protections) |
| Works inside | Its own app; connects to Microsoft 365, Google Drive, Slack and more | Its own app; connectors to common tools | Gmail, Docs, Sheets, Slides, Meet, Drive | Outlook, Word, Excel, PowerPoint, Teams |
| Known for | Broadest feature set: images, voice, custom GPTs, agents | Natural writing, long documents, analysis, coding | Seamless Google Workspace integration | Using your email, meetings and files in context |
| Admin & security | SAML SSO, admin console, usage analytics | SSO, central admin, connector controls | Managed in Workspace admin | Managed in Microsoft 365 admin |
Prices are U.S. list prices from each vendor’s official pricing page, checked October 10, 2026. Microsoft was offering Copilot Business at $18/user/month (annual) as a promotion, and Google advertises introductory discounts on Workspace. Prices and plan details change often, so confirm with the vendor before buying.
Where each one shines
Microsoft 365 Copilot: if you live in Outlook and Teams
Copilot’s advantage is context. It can summarize a Teams meeting you missed, draft a reply using the email thread, or build a PowerPoint from a Word document, all inside the apps your team already uses and based on your company’s own content. The flip side: it’s only as good as your file organization and permissions. If everyone can access everything in SharePoint, Copilot can surface it too, so tidy up permissions before rolling it out.
Gemini: if you’re a Google Workspace shop
If you’re on Google Workspace Business Standard or higher, you may already be paying for Gemini. It works across Gmail, Docs, Sheets, Meet and Drive. Check your plan before buying anything else. The Business Starter plan includes only limited Gemini features.
ChatGPT Business: the all-rounder
ChatGPT has the broadest feature set: writing, analysis, image generation, voice, shareable custom GPTs and agent features, plus connectors to tools like Microsoft 365, Google Drive and Slack. It’s a strong choice for teams that want one flexible assistant for many kinds of work.
Claude Team: writing, documents and depth
Claude is widely regarded for natural-sounding writing, careful reasoning and handling long documents like contracts, reports and policies. Premium seats add higher usage limits for heavy users. It’s a strong fit for professional services firms whose work revolves around documents.
Run a fair two-week test
Reviews only tell you so much. The best way to choose is to test two finalists on your work:
- Pick 3–5 real tasks your team does every week: a client email, a report summary, a proposal section, a spreadsheet question.
- Give two or three people access to both tools for two weeks.
- Use the same prompts in both. Our prompt templates make this easy.
- Score each result 1–5 for accuracy, quality and time saved, and ask which tool people would keep.
- Check the admin side too: user management, security settings and billing.
Frequently asked questions
Which AI is the most accurate?
All four are close, and the lead changes as new models are released every few months. For business use, accuracy depends more on good prompts, good source material and human review than on which brand you choose. Every one of them can make confident mistakes.
Is my company data safe in these tools?
On business plans, all four vendors state that they don’t use your business data to train their models by default, and they offer admin and security controls. Review the current data terms for your plan, and set your own rules for what data goes in. The tool’s terms don’t replace your policy.
Do we need licenses for everyone?
Rarely at first. Start with the people who’ll use it most, measure the benefit, and expand from there. Our pilot guide shows how.
Next step
Picked a finalist? Prove it works.
Our six-week pilot guide and free Excel scorecard help you measure time saved and ROI before you buy licenses for everyone.
