What Is ChatGPT? A Plain-English Explanation
ChatGPT is a computer program you talk to. You type a question. It types back an answer. That is the whole thing. Here is how it actually works.
The Simple Version
ChatGPT is a program that reads text and writes text back to you.
You type: "How do I make pancakes?"
It types back a recipe.
You type: "Write me a thank-you email to my doctor."
It writes the email.
That is it. You give it words. It gives you words back. The words it gives back are useful and well-organized — most of the time.
How Does It Know Things?
ChatGPT read an enormous amount of text before you ever talked to it. Books. Websites. Articles. Wikipedia. Millions of pages.
It did not memorize any of it. Instead, it learned patterns. How sentences are structured. What words go together. What a good answer looks like.
Think of it like a very well-read assistant. They have read a lot. They can talk intelligently about many topics. But they are working from memory — not looking things up in real time.
This matters. ChatGPT can be wrong. It can state incorrect facts confidently. For anything important, verify what it tells you.
What Can You Use It For?
Here are real things Canadians use ChatGPT for every day:
- Writing emails — drafts, formal letters, complaints, thank-you notes
- Explaining things — medical terms, tax concepts, legal language in plain English
- Translating — English to French, French to English, other languages
- Summarizing — paste in a long document, ask for a summary
- Recipes — what can I make with these ingredients
- Planning — help me organize a trip, plan a week of meals, create a budget
- Learning — explain how RRSPs work, what is the difference between a TFSA and an RRSP
What Can It Not Do?
- It cannot browse the internet by default. It does not know what happened yesterday.
- It cannot access your files, emails, or calendar unless you share them directly.
- It cannot make phone calls, send emails, or take actions in the real world.
- It makes mistakes. Especially on specific facts, numbers, and recent events.
How Do You Start?
Three steps:
- Go to chat.openai.com on your phone or computer
- Create a free account (you need an email address)
- Type your first question in the box at the bottom
That is it. The free version works well. You do not need to pay anything to start.
"Explain what an RRSP is in simple terms. I am a Canadian and I have never invested before."
See what it says. That will give you a feel for how it works.
Is It Safe?
Safe for most things. A few rules to follow:
- Do not type in your SIN, credit card numbers, or banking passwords
- Do not share private medical details you would not share with a stranger
- Do not trust it for medical, legal, or financial decisions without checking with a real professional
For general questions — recipes, writing help, explanations, planning — it is completely safe to use.
Is It Free?
Yes. The free version of ChatGPT works well. You get access to GPT-5.5 for up to 10 messages every few hours.
The paid version (ChatGPT Plus) costs about $28 CAD per month. It removes the message limits and adds extra features. Most beginners do not need it. Start free.
ChatGPT vs Other AI Tools
There are several AI tools available. They all do similar things.
- ChatGPT — the most well-known. Good all-around tool.
- Claude — better for writing long documents. Made by Anthropic.
- Perplexity — best for research. Every answer comes with sources you can verify. Also free.
- Gemini — made by Google. Works inside Gmail and Google Docs on the paid plan.
Start with ChatGPT or Perplexity. Both are free. Both are easy to use.