How do I write a good prompt for an AI chatbot?
Short answerGive the chatbot a clear task, the context it needs, the format you want and any limits. Specific prompts usually get more useful answers than short, vague ones.
The parts of a useful prompt
Start with the task in one clear sentence, such as write a polite reply declining a meeting. Add context, like who the reader is and what happened before. Then describe the format you want, such as a short email with three bullet points.
Include any limits too. You might ask the chatbot to keep it under 100 words, avoid jargon or use a friendly tone. Tell it what to avoid, like making promises you cannot keep.
- State the task in one sentence
- Add context about the reader or situation
- Specify the format and length
- List limits and things to avoid
Improving the answer
If the first answer misses the mark, do not start over. Tell the chatbot what to change, such as make it shorter or more direct. Ask it to explain its reasoning or list assumptions it made.
Save prompts that work well. A reusable template with blanks for names and details can save time for emails, summaries and study notes.
- Ask for specific changes
- Request a list of assumptions
- Save prompts that worked well
- Use templates with blanks for details
Common mistakes
- Writing one-line prompts and expecting detailed, personal answers.
- Asking for facts without telling the chatbot to note what it is unsure about.
- Giving the chatbot private details it does not need for the task.

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