ChatGPT vs Gemini vs Copilot: which to choose for your business — comparison and prices in 2026

The short answer: what to choose

In a company, the question “ChatGPT or Gemini – which is better?” sounds different than at home. Privately, what counts is which model gives better answers. In a company, what also counts is whether the tool can see your emails and documents, who manages the accounts, what happens to the data and how much it costs for twenty people rather than one.

That is why the starting point is infrastructure. A company on Microsoft 365 gets Copilot where it works: in Office documents, in Outlook and in Teams. A company on Google Workspace has Gemini in Gmail, Docs and Sheets. ChatGPT and Claude are strongest as standalone tools for writing, analysis, working with files and building your own assistants. Many companies combine two: an office suite with AI for everyone and ChatGPT or Claude for the few people who work most with text and data.

We have covered pricing and implementation for Copilot itself separately (Copilot for business, step by step), and you will find a broader map of the topic in our guide that takes you through AI in business, from strategy to everyday work.

How ChatGPT, Gemini, Copilot and Claude differ

The comparison below covers business versions as of September 2026. The quality of the models themselves changes so often that rankings from six months ago are out of date; we explain how to read such comparisons in our overview of the best AI tools for business.

How much do ChatGPT, Gemini, Copilot and Claude cost? Prices for September 2026

The prices below come from the vendors' official websites (as of 24 September 2026) and are given in US dollars, excluding VAT. In the Polish app store or on an invoice, the amount may be shown in zlotys and including tax, so check the final price when you buy. So how much does ChatGPT cost? It depends on whether you are asking about an account for yourself or for a team.

Personal plan vs business plan: why ChatGPT Plus is not ‘ChatGPT for business’

The most common scenario: a few people in the company pay privately for ChatGPT Plus or Google AI Pro and expense it. That works until someone pastes a client contract into such an account. Personal and business plans differ not in the quality of answers but in control: in ChatGPT Business, OpenAI does not train models on company data by default, an administrator manages the accounts, and when an employee leaves, their chat history does not leave the company with them.

The “ChatGPT Business vs Plus” comparison therefore comes down to whether the tool will hold company data. If it will, choose the business plan. If someone uses AI exclusively for general texts without any data, a personal plan will do, but that is rare.

When Claude, Perplexity, Grok and DeepSeek come in handy

‘Claude vs ChatGPT’ comparisons are appearing more and more often, because Anthropic’s Claude handles long documents and careful text editing well. The Team plan costs the same as ChatGPT Business, so for teams that write a lot it is a real alternative.

In “Perplexity vs ChatGPT” comparisons it is easy to overlook that Perplexity is primarily an AI search engine that cites sources with every answer: useful for quick research, less so for working with company documents. Grok (from xAI) and DeepSeek appear in “Grok vs ChatGPT” and “DeepSeek vs ChatGPT” comparisons, but in a company you need to ask about data: according to its privacy policy from February 2026, DeepSeek stores users' personal data in China. For many companies, that is reason enough not to use the service for work matters.

Each of these tools can also state untrue information with complete confidence. We explain how to limit this risk when discussing AI hallucinations.

Which tool for which business situation

Instead of looking for a winner in the ‘Gemini vs ChatGPT’ contest, it is better to match the tool to the situation. Here are the most common set-ups in mid-sized Polish companies.

• Company on Microsoft 365, lots of emails and meetings: Copilot. Start with the free Copilot Chat, and buy paid licences for the people who work most in Outlook and Teams.
• Company on Google Workspace: Gemini as part of the Business Standard plan or higher; compare it with ChatGPT only in the marketing team.
• Marketing and PR team, lots of text and analysis: ChatGPT Business or Claude Team for a few people, alongside the office suite. How to introduce such a tool without chaos is shown in our AI implementation plan for marketing and PR teams.
• B2B sales: AI built into the CRM often delivers more than a general-purpose chat, as we show using the example of CRM with AI.
• Small company with no IT department: one tool on a business plan and a one-page policy on what not to paste in.

How to choose, step by step: a test on your own tasks

Vendor demos show the best-case scenarios. Your company has its own: Polish emails with typos, spreadsheets with inconsistent column names, proposals in an old template. That is why the comparison has to be done on your own material.

1. STEP 01Choose 10 real tasks

   For example, a reply to a complaint, a meeting summary, analysis of a sales spreadsheet, a draft proposal, translating an email. Tasks from different departments.

2. STEP 02Choose two tools to test

   Usually: the AI from your office suite and one standalone tool (ChatGPT or Claude). Three is already too many for a reliable comparison.

3. STEP 03Give both the same prompts and materials

   On test accounts on a business plan, without data that must not leave the company. Record the time taken and the number of corrections.

4. STEP 04Assess the results blind

   Have the head of department rate the answers without knowing which tool produced them. This reduces the effect of brand preference.

5. STEP 05Calculate the cost per person, not per company

   Not everyone needs a full licence. It is often enough for part of the team to have a paid plan while the rest use the basic version; check this in the test.

When it is worth paying for two tools, and when it is not

Two tools make sense when different groups of employees have different needs: everyone uses the AI in the office suite, while a few people in marketing, analytics or management need a stronger tool for text. It makes no sense when the same person pays for three subscriptions because ‘each one does something slightly better’.

Signs that it is time to put your tools in order: several personal accounts are circulating in the company, nobody knows who pays for what, and employees do not know what must not be pasted in. Signs that it is better to wait with the purchase: nobody has time for a test, and the team cannot name three tasks that AI would speed up. In the latter situation, it is better to start with AI training for your team, and put off purchases for a quarter.

How to work out whether a subscription pays for itself

In a company, the question “is ChatGPT Plus worth it?” translates into a simple calculation: how many hours a month does an employee save and how much does their hour cost. If a licence costing a few dozen dollars saves even a few hours of a specialist's work, it pays for itself quickly. But you have to measure this, not assume it.

Measure the time taken for three repetitive tasks before implementation and after a month of use, including the time spent checking results. If the number of proposals or the speed of replies to customers goes up, compare the result with the same period of the previous year or with a group that is not yet using the tool, because only then do you know it is the effect of AI and not of the season. We describe this difference in step-by-step sales planning and on the page about our method correlation vs impact.

Cancellation, plan changes and invoices in practice

If someone in the company has a private ChatGPT Plus account and you are moving to a business plan, the personal subscription has to be cancelled. According to the OpenAI help centre: log in, open the account menu, choose Settings, then Billing and ‘Cancel plan’. Paid features keep working until the end of the billing period; cancel at least 24 hours before the next payment.

When moving to a business plan, also decide what happens to the employee's existing conversations and custom assistants, because some of them contain company knowledge that may be lost when the personal account is cancelled. If you are planning to build assistants on company knowledge, start with our article on how an AI assistant in the company.

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