How to write better prompts for AI chatbots: a practical guide with examples

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The difference between a vague answer and a genuinely useful one is often the prompt. You do not need tricks or magic phrases. Good prompting is mostly clear communication: tell the chatbot what a capable colleague would need to know to do the job well. These tips work with any of the popular AI chatbots.

1. Give it context

The model knows nothing about you, your project or your audience unless you say. Compare:

Weak: "Write an email about the meeting."
Better: "Write a short email to my team of five engineers moving Thursday's 2pm planning meeting to Friday at 10am because the client call overran. Friendly, no apology needed, under 100 words."

Who it is for, why it matters and what has happened so far all change the answer.

2. Say what role or expertise to bring

Asking it to answer as a particular kind of expert can focus the response: "You are an experienced secondary-school maths teacher. Explain compound interest to a 15-year-old." The role helps most when combined with a clear audience.

3. Set constraints

Be explicit about length, tone, reading level and what to leave out:

"In three bullet points."
"Plain English, no jargon."
"British spelling."
"Do not suggest buying new software."

Positive instructions ("write in short sentences") tend to work better than only negative ones.

4. Show an example

If you want a particular style or structure, paste an example: "Here is a product description I like. Write one in the same style for this item." Examples communicate tone and format far better than adjectives do. If you give several, vary them so the model does not copy one too closely.

5. Ask for a format

Tell it how to lay out the answer: a table with named columns, a numbered checklist, a short summary followed by detail, or a draft you can paste straight into a document. For anything you will process further, such as a spreadsheet, ask for exactly the structure you need.

6. Break big tasks into steps

For complex work, do not ask for everything at once. Ask for an outline first, agree it, then ask for each section. For problems that need reasoning, ask it to work through the problem step by step before giving a final answer, or to list its assumptions. You can then spot where it went wrong.

7. Iterate instead of starting over

The first answer is a draft. Follow up:

"Make it more concise."
"The second point is wrong because… try again."
"Give me three alternative openings."
"What questions would you ask me to improve this?"

Asking the chatbot what it needs from you is one of the most useful prompts there is.

8. Give it the material

If the answer depends on a document, paste the relevant text or attach the file rather than describing it. Put long material first and your question after it, and say clearly which part is the source and which part is the instruction. Ask it to quote the passage it relied on, which makes checking easier.

9. Check facts, always

Chatbots can state wrong things confidently, especially exact figures, dates, quotations, laws, medical details and references. They can invent sources that look real.

Verify anything important against an official or primary source.
If the chatbot can search the web, ask for links and open them yourself.
Ask "How confident are you, and what would you check?" It will not always know, but it often flags weak spots.
For maths, ask it to show the working, or use a tool that runs the calculation.

10. Protect your privacy

Do not paste passwords, ID numbers, bank details or medical records.
Remove names and identifying details from work documents unless your organisation has approved the tool for that data.
Check the app's settings for chat history and whether your conversations may be used to improve models, and adjust them to your comfort level.
Remember that shared chat links can be seen by anyone who has the link.

A reusable template

"I am [who you are] working on [task] for [audience]. The goal is [outcome]. Here is the background: [context or material]. Please [specific request]. Constraints: [length, tone, things to avoid]. Format: [layout]. Before you start, ask me anything you need clarified." What prompt has worked best for you, or where do chatbots keep letting you down? Share examples in the comments.