Which AI assistant should I use? A plain-English guide for business owners
Claude, ChatGPT, Gemini and Copilot all look similar to use but differ on the things you actually notice: where your data sits, what they integrate with, and what they cost.
The first time someone asked me which AI to use, I gave them a thirty-minute answer. By the end I could see I had lost them. So this article is what I should have said in five minutes.
The major AI assistants - Claude, ChatGPT, Gemini, Copilot - look very different on the inside but feel surprisingly similar to use. The interesting differences for an SME owner are not the model architecture. They are the things you actually notice: who owns it, where your data sits, what it integrates with, and what it costs.
The four big choices in 2026
Claude (made by Anthropic) is widely regarded as the strongest at long, careful work: reading a contract and explaining it, drafting a thoughtful first response to a difficult email, working through a complex spreadsheet. It is owned by an independent AI safety lab. It does not train on your data on paid tiers. It is the one I personally use most for client work.
ChatGPT (made by OpenAI) is the most familiar and the most-integrated. If you have ever heard a non-technical relative talk about AI, this is what they meant. It is broadly capable, has the largest ecosystem of plugins and tools, and is the default starting point for most businesses. The free tier is enough for many small businesses to start with.
Gemini (made by Google) is the one that lives inside Google Workspace. If your business runs on Gmail, Docs, Sheets and Drive, Gemini is the AI that already sees your documents in their natural home. That is a meaningful advantage for many small businesses.
Copilot (made by Microsoft) is Gemini for the Microsoft world. If you live in Microsoft 365 - Outlook, Word, Excel, Teams - Copilot is the AI that sits alongside you in those tools. It is genuinely useful for businesses already deep in Microsoft.
How to think about which one to pick
Forget the model rankings on Twitter. They change every few weeks. The questions that actually matter for an SME are these.
Where does your day already happen?
If you live in Google Workspace, Gemini will save you the most time. If you live in Microsoft 365, Copilot. If you live in your inbox and a browser without a strong attachment to either, ChatGPT or Claude. The best AI is the one that does not make you switch tab.
What kind of work are you trying to help with?
For careful, long-form work - reading documents, writing thoughtful replies, working through complex problems - Claude tends to be ahead. For quick, broad questions and creative variations, ChatGPT is hard to beat. For pulling information out of your own documents, Gemini and Copilot win because they already see those documents.
What is your budget?
Free tiers exist on all of them. You can do real work on a free ChatGPT or free Claude account. The paid tiers for individuals are around £18 to £20 a month per user. The Microsoft and Google business AI bundles start higher because they bundle in productivity-suite licensing.
What is your data sensitivity?
Read the privacy terms, especially for free tiers. The paid versions of Claude, ChatGPT, Gemini Business and Copilot all promise not to train on your data. The free consumer tiers usually do, unless you opt out. There is more on this in our guide to AI and data privacy.
The honest answer
For a small business in North Wales, here is the practical advice I give nine times out of ten.
Start with ChatGPT on its free tier. Use it for a fortnight. Get used to the conversation pattern. Find its limits.
When the limits start to bite - and they will - move to a paid tier. Pick whichever sits where your work already happens. If you are deep in Google Workspace, Gemini. If you are deep in Microsoft 365, Copilot. If you mostly work outside both ecosystems, the choice is between Claude (better for careful, longer work) and ChatGPT Plus (broader, more familiar, more plugins).
Many of the small businesses I work with end up running two: a paid ChatGPT or Claude account for general-purpose work, and Copilot or Gemini inside their existing productivity suite. That sounds like over-buying but the combined cost is around £30 to £40 a month per user, and the time saved is usually a fraction of an hour a day. You do not need to read very far into a salary calculator to see that maths working.
What about the model versions?
Every six to twelve months a new "best" model comes out. Claude Opus, GPT-5, Gemini 2.5, the next thing. The headlines suggest there is a clear leader. There never is for long. By the time you have decided which is best, another release has changed the picture.
The practical advice for an SME is to ignore the version-number wars. Pick the platform that fits your day, get good at using it, and let the platform's own release cadence carry you forward. The team you choose is more important than the version number.
Where to go from here
If you would like to walk through this with someone who has used all four for actual client work, the AI Breakfast Club training runs through it in detail in the first session. Or book a free discovery call and I will help you pick the right starting point for your specific business.
For the broader picture of where AI is landing first across our region, the regional economy guide sets the scene.