Use ChatGPT for work you repeat, where you already know what a good result looks like, and where checking its answer is faster than doing the job yourself. That covers a lot: first drafts, summaries, rewrites, plans, explanations, messy notes turned into something tidy, spreadsheet questions and side-by-side comparisons. It is a poor fit for facts you cannot check, for final medical, legal or money decisions, and for anything confidential.
Most people who open ChatGPT once and drift away never found their first good task. Below are 20 to start with, a quick test for any new one, and a simple way to see whether it is saving you time or just feels like it.
Three questions before you hand over a task
- Do you do it at least once a week? A task you do twice a year is not worth learning to hand over.
- Would you recognise a good result? If you cannot tell a good summary from a bad one, ChatGPT cannot help you yet.
- Is checking faster than doing? Reading a draft email takes a minute. Checking a tax calculation line by line can take longer than doing it.
Three yeses: hand it over. One no: keep doing it yourself for now.
20 tasks worth giving ChatGPT
| # | Task | What to give ChatGPT | What you still check |
|---|---|---|---|
| At work | |||
| 1 | Reply to a tricky email | the email and what you want to happen | tone, promises, names |
| 2 | Meeting notes to action list | your rough notes or a transcript | who does what, dates |
| 3 | First draft of a document | purpose, reader, key points, an old example | facts and numbers |
| 4 | Make a long text shorter | the text and the target length | nothing important dropped |
| 5 | Questions from a spreadsheet | the file and the questions in plain words | totals against the original |
| 6 | Prepare for a hard conversation | the situation and the other side's likely view | that it sounds like you |
| 7 | Compare offers or quotes | the offers pasted in full | prices and conditions |
| 8 | Write a how-to for a colleague | your steps in any order | that someone new could follow it |
| At home | |||
| 9 | Plan a week of meals | who eats, budget, what is in the fridge | allergies, prices |
| 10 | Make sense of a confusing letter | the letter, with personal details removed | anything with a deadline, with the sender |
| 11 | Plan a trip | dates, budget, what you like | opening times, bookings |
| 12 | Write a complaint or refund request | what happened, what you want | dates and order numbers |
| 13 | Compare two products | links or specs of both | current prices |
| 14 | Sort out a budget | income and spending categories | the arithmetic |
| Learning | |||
| 15 | Explain something at your level | the topic and what you already know | one trusted source |
| 16 | Quiz you before an exam or interview | your notes or the job description | the answers to its questions |
| 17 | Practise a language | your level and a topic | nothing, just practise |
| Money | |||
| 18 | A proposal or quote for a client | the job, your price, an old proposal | the price and scope |
| 19 | Product or service descriptions | facts about what you sell | every claim is true |
| 20 | Polite payment reminder | invoice details, how late it is | amount and dates |
For paid work, our ChatGPT prompts to make money has ready-to-copy prompts for proposals, pricing, listings and payment reminders.
You don't need the "right prompt"
The most common reason people give up is the feeling that there is a secret wording they don't know. There isn't. Explain the task the way you would to a new colleague: what you need, who it is for, what a good result looks like, and what to avoid. Paste the material it should work from.
Then add one line: "Before you start, tell me in three sentences how you understand the task." If the summary is off, correct it. You will fix most mistakes before they happen, and you will learn how to explain the next task better.
The one-week test: does it actually save time?
ChatGPT feels fast because the answer appears in seconds. The real time includes writing the request, finding the material to paste, reading the answer, fixing it and checking it. Sometimes that adds up to more than doing the job yourself.
So test it on real work:
- List the tasks you repeated last month. Look at your calendar, sent emails and files; don't rely on memory.
- Pick one. The most boring one is usually the best.
- Time it the old way once, from the moment you start to the moment it is done.
- Time it with ChatGPT once, including the request, the waiting, the fixes and the checking.
- Keep it only if the second number is smaller. Then try the next task.
After a week you will know which jobs to hand over and which to keep. Most people end up with three to five tasks that clearly save time and drop the rest.
The money math
If you pay for ChatGPT, it is worth it when the time it saves is worth more than the subscription. A simple way to see it, using the US prices on OpenAI's pricing page on 31 October 2026 (Go $8 a month, Plus $20):
| Your time is worth | Minutes a month that pay for Go ($8) | Minutes a month that pay for Plus ($20) |
| $15 an hour | 32 | 80 |
| $30 an hour | 16 | 40 |
| $60 an hour | 8 | 20 |
At $30 an hour, Plus pays for itself if it saves you 40 minutes a month, about ten minutes a week. If the one-week test found nothing that saves ten minutes a week, stay on the free plan.
Which plan these tasks need
Almost all 20 tasks above work on the free plan. According to OpenAI's pricing page on 31 October 2026:
| Plan | Price | What it adds for everyday use |
| Free | $0 | unlimited everyday text chats; limited file uploads, image creation, voice chats and deep research; projects and scheduled tasks |
| Go | $8 a month | more uploads, images, voice chats and memory; OpenAI notes this plan may include ads |
| Plus | $20 a month | the stronger GPT-6 models, full deep research and Codex, full access to the add-ins for Excel, Word, PowerPoint and Google Sheets, interactive tables and charts |
| Pro | from $100 a month | three levels of limits, Pro-level reasoning, up to $500 a month in API credits |
Pay for Go when you keep hitting the limits on uploads or images. Pay for Plus when a task you do every week needs the stronger models, deep research or the Office add-ins. The detailed comparison is in ChatGPT Go vs Plus: $8 or $20?.
What not to use ChatGPT for
- Facts you will not check. ChatGPT can state a wrong number, date or quote with full confidence. Use it to draft and explain, then check anything that matters against a source.
- Final medical, legal or tax decisions. It is fine for understanding a letter or preparing questions for a doctor, lawyer or accountant. The decision belongs with them and with you.
- Passwords, card numbers and other people's data. Don't paste passwords, full card details or a client's personal data. Remove names and account numbers before you paste a document.
- Work you need to own outright. Someone else can get a very similar answer to the same request. For anything that has to be unique, such as a brand name or a logo idea, treat the answer as a starting point.
Keep what works
The most useful habit is also the most ignored: save the result you accepted. Copy the final version into a document or keep it in a ChatGPT project, together with the material it was based on and what you would do next. A simple test: could you or a colleague pick up the task next month without scrolling through the old chat? If yes, you have built something reusable, not just had a conversation.
The same goes for requests that worked well. Keep a short note of them. After a month you will have your own small set of instructions for the tasks you do most, which is worth more than any list of prompts written by someone else.
FAQ
What is ChatGPT best used for?
Drafting, summarising, rewriting, explaining and organising: tasks where you can quickly judge the result. It saves the most time on work you repeat every week.
Can I use ChatGPT for free?
Yes. The free plan includes unlimited everyday text chats, with limits on uploads, images, voice and deep research. All 20 tasks in this article can be started on it.
Is ChatGPT Plus worth it?
Only if a task you do regularly needs what Plus adds: the stronger models, full deep research, Codex or the Office add-ins. At $30 an hour, it needs to save about 40 minutes a month to pay for itself. See ChatGPT Go vs Plus for the full comparison.
What should I not use ChatGPT for?
Facts you won't verify, final medical, legal or tax decisions, and anything involving passwords, card numbers or other people's personal data.
Does ChatGPT really save time?
On the right tasks, yes. On others, writing the request and checking the answer takes longer than doing the job. Time one real task both ways before you decide.
Sources
- ChatGPT pricing (OpenAI, plan contents and US prices checked 31 October 2026)
