How to write a good AI prompt (works in any tool)
You do not need special jargon to get good results from an AI tool. The official guides from Microsoft, OpenAI, Google, and Anthropic agree on a few plain habits. Here they are, in order.
Who this is for
Anyone using an AI chat tool who wants clearer, more useful answers.
Before you start
- An account with any AI chat tool (for example ChatGPT, Gemini, Claude, Copilot, or Grok Bot).
Step by step
Start with a clear goal
Say exactly what you want done. Microsoft's guide notes that a clear goal is the only part a prompt requires; the rest makes it better.
Write a short thank-you email to a customer.Add context: why, and who it is for
Explain the situation and the audience. OpenAI's and Anthropic's help pages both say specific, detailed requests get better answers.
The customer, Dana, placed her third order this month. She runs a bakery and is very busy.Point to the source material
Paste or attach what the AI should use: notes, a document, an email. If it is long, Google's guide recommends putting the material first and your question at the end, with a bridge such as “Based on the information above…”.
Set expectations: format, length, tone
Say how the answer should look. OpenAI suggests tone words such as friendly, formal, or professional.
Keep it under 80 words, warm but professional, and end with a one-line offer of help.Show an example when format matters
If you want a specific style, include a short example of a good answer. Google's guide strongly recommends examples; they show the pattern better than a description.
Label the parts of longer prompts
For longer prompts, use simple headings or labels (such as Goal, Context, Source, Expectations) so the AI can tell your instructions apart from your material. OpenAI and Google both recommend clear separators like headings.
Goal: Draft a short thank-you email. Context: Dana runs a bakery; this is her third order this month. Source: Her order note: "Please deliver before 7am." Expectations: Under 80 words, warm but professional, end with an offer of help.Read the answer, then refine
Treat the first answer as a draft. Ask for changes: shorter, simpler, a different tone, more detail. Microsoft, OpenAI, and Anthropic all describe this back-and-forth as normal.
Check facts before you rely on them
Microsoft reminds users to review and verify responses, because AI tools can be wrong, and the same prompt can give different answers each time. Double-check names, numbers, dates, and anything important against a trusted source.
Tips
- One task per prompt usually works better than a long list of unrelated requests.
- You can ask the AI to ask you questions before it answers if your request is complicated.
- Save prompts that work well and reuse them.
Common mistakes
- A vague one-liner like “write an email” with no audience, purpose, or length.
- Pasting private or sensitive information (passwords, account numbers, other people's personal details).
- Accepting the first answer without reading or checking it.
FAQ
Does the same prompt work in every AI tool?
The habits here appear in official guides from Microsoft, OpenAI, Google, and Anthropic, so they carry across tools. Exact answers will still differ between tools.
Why do I get a different answer each time?
AI models include some randomness, so the same prompt can produce slightly different responses. Microsoft's guide notes this.
Do I need to learn “prompt engineering”?
No. Clear goal, context, source, and expectations cover most everyday needs.
Sources and last checked
We checked these official pages on October 25, 2026. AI tools change often; if something looks different, the official page is the final word. Spotted a change? Email [email protected].
- Microsoft Support: Get started writing prompts in Microsoft Copilot
https://support.microsoft.com/en-us/microsoft-365-copilot/get-started-writing-prompts-in-microsoft-365-copilot - OpenAI Help Center: Prompt engineering best practices for ChatGPT
https://help.openai.com/en/articles/10032626-prompt-engineering-best-practices-for-chatgpt - Google AI for Developers: Prompt design strategies
https://ai.google.dev/gemini-api/docs/prompting-strategies - Claude Help Center: Get started with Claude (tips)
https://support.claude.com/en/articles/8114491-get-started-with-claude - OpenAI developer docs: Prompt engineering (formatting)
https://developers.openai.com/api/docs/guides/prompt-engineering
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Claude is a trademark of Anthropic; ChatGPT is a trademark of OpenAI; Microsoft Copilot is a trademark of the Microsoft group of companies; Gemini is a trademark of Google; Grok Bot is a trademark of its owner. Not affiliated with or endorsed by Anthropic, OpenAI, Microsoft, Google, or the makers of Grok Bot.
Deuterium SI is an independent educational publisher. We are not affiliated with, endorsed by, or sponsored by the makers of any product we describe, including Grok Bot, Claude (Anthropic), ChatGPT (OpenAI), Microsoft Copilot (Microsoft), or Gemini (Google). Product names are trademarks of their respective owners and are used only to identify the products being explained. Product details, plans, and prices can change at any time; check the official sources above.