ChatGPT, Claude or Gemini: which one to start with?

Where they are the same, which is nearly everywhere

All three work the same way underneath: they build text word by word from what you give them. All three have a free tier that is plenty to start with, run in a browser and on a phone, and all three invent facts with the same confidence when they do not have them. Everything you learn about asking in one transfers straight to the other two.

Differences you will actually notice

• The default tone. Each writes in a slightly different house style. It is a matter of taste, and it stops mattering the moment you give one an example of yours.
• How much text it takes at once. If you work with very long documents, try yours with a real one before deciding.
• The extras. Web search, images, voice and file handling shuffle between all three every few months. Do not choose on a feature they may all have by spring.
• The privacy settings. This one is worth checking: each stores and uses your conversations differently, and each hides the switch somewhere else.

How to choose in ten minutes

1. Take a real job you do every week.
2. Give the same request to all three, written with context, task, criteria and format.
3. Keep the one that made you correct the least.
4. That is yours for the next month. Check its privacy settings and carry on.

What not to do

Pay for the advanced tier on day one. Nearly everything that frustrates a beginner — generic answers, invented facts, texts that do not sound like you — is fixed by changing how you ask, not by changing plan. When you hit the ceiling of the free tier you will know, because you will have a concrete reason.

The tool matters far less than it looks; what changes the result is what you write.