AI Copywriting Prompts: How to Brief AI for Copy That Converts
Why most AI copy sounds generic, what a strong AI copywriting brief contains, and reusable prompt structures for common business copy.
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The quality of AI-written copy depends far more on the brief than on the tool. Ask an AI model to “write a homepage for my plumbing business” and you will get a page that sounds like every other plumbing site. Give it your audience, their real problems, your genuine differences, proof, voice rules and a clear goal, and you get a draft worth editing.
A good AI copywriting prompt is really a good creative brief, written down.
Why AI copy sounds generic
Language models predict likely text. Without specific input, the most likely text is the average of everything similar they have seen, which is exactly why unbriefed AI copy is full of phrases like “tailored solutions”, “your trusted partner” and “in today’s fast-paced world”. The model is not being lazy. It is filling gaps with the most common patterns.
The fix is to remove the gaps.
What a strong brief includes
- The goal of the piece: what the reader should do or believe after reading.
- The audience: who they are, what situation they are in, what they already know.
- Their problems in their own words: quotes from calls, reviews or emails. This is the single biggest improvement you can make. See our guide to voice of customer research.
- Your offer and real differences: what you do, how, and what makes you a better choice for this audience.
- Proof you can actually use: results, testimonials, credentials. Tell the model not to invent any.
- Voice and rules: tone, words to avoid, spelling, claims you cannot make. A brand voice guide makes this easy to paste in.
- Format and length: sections, word count, headline count.
A reusable prompt structure
A structure like this works well for most business copy:
You are writing [type of copy] for [business], which helps [audience] with [problem]. The goal is to get readers to [action]. The readers are [description and situation]. In their own words, their main problems are: [quotes]. Our offer is [description]. What makes us different for this audience: [points]. Proof we can use: [list]. Do not invent statistics, testimonials or claims. Voice: [traits and rules]. Avoid these phrases: [list]. Format: [structure and length].
It looks long, but most of it can be saved and reused, so only the specifics change each time.
Use AI in steps, not one shot
You get better results by breaking the job down:
- Ask for several angles or headline options before writing anything long.
- Choose the angle yourself, then ask for an outline.
- Draft section by section, giving feedback as you go.
- Ask the model to critique the draft against the brief, such as where it is vague or where claims need proof.
This keeps you in control of strategy, which is the part AI is weakest at.
Prompts for specific jobs
Headlines: ask for fifteen headline options across different approaches, such as outcome-led, problem-led and differentiator-led, using the customer quotes provided. Then shortlist and test. Our guide to writing headlines that convert explains how to choose.
Service pages: provide the structure you want, such as problem, what is included, process, proof, pricing signals and FAQs, and ask the model to fill each section from your brief. See how to write a service page.
Rewriting existing copy: paste the current text and ask the model to make it more specific and customer-focused while keeping every factual claim unchanged.
What AI should not decide
AI is good at producing drafts, variations and structure quickly. It should not decide your positioning, invent proof, make claims about results, or judge what your customers care about most. Those decisions need someone who understands the business and its buyers.
Every draft also needs a human edit for accuracy, specificity and voice. Our article on how to edit AI copy so it sounds human covers that final pass, and whether AI website copy hurts SEO covers the search side.
Copy that uses AI without sounding like it
We use AI to speed up research and drafting, but the strategy, customer insight and final writing stay human. If you want copy that is efficient to produce and still sounds like your business, see our AI Conversion Copywriting service or get in touch.