If you run a small business, you have probably heard that AI can save you hours every week. The hard part is knowing where to start, because there are now several popular AI assistants: ChatGPT, Claude, Gemini and Grok. Here is a plain-English comparison to help you choose.

The four at a glance

• ChatGPT (from OpenAI) is the best-known assistant and a good all-rounder. It is strong at everyday writing, brainstorming, summarising and answering questions, and it has a large library of add-ons and tools.
• Claude (from Anthropic) is popular for clear, natural writing and for working with long documents. Many people use it to draft emails, tidy up quotes and proposals, and read through contracts or lengthy PDFs.
• Gemini (from Google) is built into Google products such as Search, Gmail, Docs and Google Maps. If you already live in a Google account, it fits neatly into the tools you use.
• Grok (from xAI) is built into the X platform (formerly Twitter) and is known for its conversational style and its access to posts on X. It is handy for following trends and news on that platform.

Which one should you use for what?

• Writing quotes, emails and customer replies: ChatGPT and Claude are both excellent. Try both on the same task and keep the one whose tone you prefer.
• Reading long documents or contracts: Claude is often the favourite because it handles long text well.
• Working inside Gmail, Google Docs or Google Maps: Gemini, because it lives where your work already is.
• Keeping an eye on what people are talking about on X: Grok.

Free or paid?

All four have a free way to start, and each also offers paid plans with higher limits and extra features. Plans and prices change often, so check each company’s website for what is on offer today. For most small businesses the free versions are plenty while you are learning.

How to get better answers from any of them

1. Give context. Say who you are, who the message is for and what you want (“I am a plumber in Cape Town writing to a customer who has not paid”).
2. Be specific about the result. Ask for “a friendly three-line WhatsApp reply” rather than “a message”.
3. Ask for changes. If the first answer is not right, say “shorter” or “more formal” and it will adjust.

Always double-check

AI assistants can sound confident and still be wrong. Never trust them blindly for prices, legal rules, safety requirements or technical specifications. Read everything before you send it, and keep customers’ private details out of your prompts.

The bottom line

There is no single winner. Pick one, use it for a week on real tasks, then try another and compare. The best AI is the one that saves you time and sounds like you.

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