Choosing your AI assistant

The three main assistants cost $20 a month each at the standard paid tier, checked in September 2026. They are close enough in quality that the comparison articles have to reach for benchmarks nobody outside a lab cares about.

So pick on fit, not on leaderboards.

The short answer

Already in Google Workspace all day? Gemini. It sits inside Gmail, Docs and Drive, and the thing that gets used is the thing that is already open.

Write a lot, and care how it sounds? Claude. It holds a voice better across a long document and pushes back more readily instead of agreeing with everything.

Want the widest set of extras in one place? ChatGPT. Image generation, voice, data analysis and the largest ecosystem of add-ons.

Any of the three will do 90% of what you need. The wrong choice costs you very little, so choose quickly and get on with the work.

Do you need to pay at all

Free tiers are genuinely usable now. Pay when one of these becomes true:

• You hit usage limits mid-task, more than once a week.
• You need the better model for something that matters. Free tiers usually run a smaller model or drop you to one after a few messages.
• You want file uploads, longer documents, or the memory features that carry context between conversations.

Until then, free is not a compromise, it is the correct plan. Most people who are frustrated with AI are frustrated with a vague request, not a cheap tier, which is what the guide on asking properly is about.

Where they genuinely differ

If you care about	Look at	Why
Working inside email and docs	Gemini	It is already in the tools, so there is no copy and paste tax
Long documents and consistent tone	Claude	Holds a voice further into a long piece and disagrees when you are wrong
Breadth of features in one subscription	ChatGPT	Images, voice, analysis and the largest add-on ecosystem
Your employer's rules	Whichever is approved	An approved tool you can use beats a better one you cannot

That last row decides it more often than the first three. Check before you pay.

What paying does not buy

It does not remove the need to check facts. Paid tiers invent things too.

It does not make the tool know your company. That comes from what you paste in, every time.

And it does not stop the model changing under you. The tool you subscribed to in March behaves differently in September, sometimes better, occasionally worse. Nobody sends you a note about it.

A ten-minute test before you commit

1. Take a real piece of work you finished last week. Not a test question.
2. Give the same request to two of the three, free tiers are fine.
3. Read both answers as if a colleague sent them. Which one would you send back for edits, and which one would you rewrite entirely?
4. Pick the winner and use it for a month before considering the other one again.

The honest limitation

Switching later is easy, and that is the point. Your conversations do not transfer, but nothing else is locked in, so the cost of a wrong choice is one month of a subscription. Spending a week comparing costs more than that.