The pros and cons of ChatGPT: an honest beginner's guide

ChatGPT’s main pros are speed, a capable free version, and real skill at writing, explaining, and summarising. Its main cons are that it can confidently make things up, its knowledge can be out of date, what you type may be stored, and relying on it too much can blunt your own thinking. Each con has a practical fix.

In this guide, you will see the pros and cons side by side, then learn what to do about each downside so you can use ChatGPT with confidence.

What are the pros and cons of ChatGPT at a glance?

Here is the honest summary. Read across each row: the pro and con in the same line are often two sides of the same feature.

Pros	Cons
Replies in seconds, at any time of day	Speed can tempt you to skip checking the answer
Writes clear, natural text on almost any topic	Can state wrong facts with complete confidence
Knows about a huge range of subjects	Built-in knowledge stops at a fixed date
Free version covers most everyday tasks	On personal accounts, your chats may help train future models unless you opt out
Patient: you can ask the same question ten ways	Easy to lean on so much that your own skills fade
Learned from a vast amount of human writing	Can repeat the unfairness and gaps in that writing
Great for drafts, summaries, and brainstorming	Uses real computing power and energy behind the scenes

None of these cons is a reason to avoid ChatGPT. They are reasons to use it knowingly.

Why does ChatGPT make things up?

This is the con that catches people out most. ChatGPT writes by predicting what words should come next, and sometimes it produces something that sounds right but is not. It might invent a statistic, a quote, or even a book that does not exist. This is called a hallucination.

What to do about it: treat any fact, figure, or name as a draft until you have checked it. Ask ChatGPT for its sources, then open them yourself. Our guide on why AI hallucinates explains the cause, and fact-checking AI answers gives you a quick routine to follow.

Is ChatGPT’s information out of date?

It can be. ChatGPT learned from a large body of text gathered up to a certain point, and its built-in knowledge stops there. That point is called the knowledge cutoff. Ask about something newer and it may not know, or may guess.

What to do about it: for anything that changes over time, like news, opening hours, or rules, ask it to search the web and show you where it found the answer. If you see no links, assume it answered from memory.

What about privacy?

Anything you type into ChatGPT is sent to OpenAI’s servers. Depending on your settings, conversations may be kept and used to help improve future versions. You can switch that off in the settings, but it is still wise to be careful.

What to do about it: keep passwords, bank details, medical records, and other people’s private information out of your chats. Check the data settings once, and see our guide on whether ChatGPT is safe for the details.

Can relying on ChatGPT be a problem?

Yes, quietly. If ChatGPT always writes your emails or solves your problems, you may find those skills get rusty, a bit like relying on a sat nav until you cannot find your way without it. It can also make it easy to accept an answer you have not really thought about.

What to do about it: use it as a helper, not a replacement. Have a go yourself first, then ask it to improve or challenge your work. Our guide on avoiding over-reliance on AI has more practical ideas.

Is ChatGPT biased?

It can be. ChatGPT learned from human writing, and human writing contains human prejudices and blind spots. The AI can absorb those patterns and repeat them, for example by assuming a doctor is a man or by giving a narrow view of a topic. This is known as bias.

What to do about it: notice when an answer seems one-sided, and ask for other perspectives. A prompt like “What would someone who disagrees with this say?” often surfaces what was missing.

Is ChatGPT bad for the environment?

Running AI takes a lot of computing power, which uses electricity and water in data centres, though the impact of a single chat is small and still debated. Our guide on whether AI is bad for the environment weighs up the evidence calmly.

Try it yourself

A good way to see both sides of ChatGPT is to ask it to be honest about its own weaknesses on a real task. Copy this prompt and fill in the brackets:

I want to use you to help with [describe your task, for example
planning a family holiday]. Before we start, tell me:
1. Three ways you could genuinely help with this.
2. Three ways you might get it wrong or mislead me.
3. What I should double-check myself before relying on your answer.
Keep it short and plain.

You will usually get a sensible, balanced reply. It also gives you a ready-made checklist for that task.

So, is ChatGPT worth using?

For most people, yes. Its strengths are real and immediately useful, and every weakness in this guide can be managed with a small habit: check facts, ask for sources, guard private details, and keep thinking for yourself.

Next steps

If you would like to compare how ChatGPT stacks up against similar tools, our guide to ChatGPT alternatives is a good next read. Many of the same pros and cons apply to them too.