What Makes a Good AI Prompt? 5 Things Every Strong Prompt Has
A good prompt is not a magic phrase. It tells the model enough that it does not have to guess.
Five things separate a prompt that works from one that does not. Each one below has a weak version and a better version, so you can see the difference rather than read about it.
Goal clarity
Does the AI know exactly what you want?
Missing this
“Help me with my email”
With it
Rewrite this email to be more direct and cut the length by half. Keep the main ask in the first sentence.
Read it back and ask what else it could mean. If you can think of a second answer that also fits, so can the model.
Context
Does the AI have the background it needs?
Missing this
“Write a bio for my website”
With it
Write a professional bio for my personal website. I'm a freelance UX designer, 6 years of experience, focused on fintech clients. I want to come across as approachable and credible, not corporate.
Context is who you are and what the thing is for. Leave it out and the model writes for an average person, who is not you.
Format
Have you specified what the output should look like?
Missing this
“Give me ideas for blog posts”
With it
Give me 5 blog post ideas for a developer tools company. Format as a numbered list with: title, target reader, and one sentence on what makes it interesting.
Say how many, how long, and in what shape. If you do not, you get the model's default, which is almost always too long.
Constraints
Have you told the AI what to avoid or stay within?
Missing this
“Write a tagline for my product”
With it
Write 5 tagline options for a password manager aimed at families. Max 8 words each. Avoid fear-based messaging. Don't use the words "secure", "safe", or "protect".
A constraint is anything that narrows the answer. Ban a word, cap the length, rule out a tone. Each one is a mistake the model can no longer make.
Examples
Have you shown the AI what good looks like?
Missing this
“Write a product update email in a friendly tone”
With it
Write a product update email in a friendly tone. Here's an example of the style I want: "We just shipped something small that will save you 20 minutes a week. Here's what changed and why." Match the casual directness - no corporate language, no jargon.
One example does more than a paragraph of description. Showing the model a sentence you like settles tone and length at once.
A prompt with all five
Here is one that has all five. It is long, and that is the point: every extra line removes a decision the model would otherwise make for you.
Act as a senior copywriter with experience in B2B SaaS marketing. Write a 3-paragraph case study introduction for a company that reduced customer churn by 40% using our analytics tool. Target reader: a VP of Customer Success at a 100–500 person SaaS company. Paragraph 1: the problem they faced. Paragraph 2: what they tried before and why it didn't work. Paragraph 3: how they discovered our tool. Avoid superlatives. Use concrete numbers. Do not mention the product name in the first paragraph.
You could hand this to a freelancer and they would know what to write.
Try it on your own prompt
Paste a prompt into Deepclario. It rewrites it and marks every line it added, so you can see which of these five were missing and take back anything you did not ask for.