Ad Copy With AI: A Brief, a Framework and a Check
To write ad copy with AI, give the model a real brief first. Name one reader and how aware they are, then the offer and the proof you have. Ask for a specific framework and hook pattern instead of “catchy ads”, hold each line to the placement’s limits, then check every claim before anything runs.
Below is the brief, the framework choice, the slot limits we use, and the checks that keep AI ad copy from getting rejected or ignored.
Why does AI ad copy sound generic?
Because the request usually is. “Write five Facebook ads for my app” gives the model nothing to work with except the average of every ad it has seen. You get a question opener, a list of three benefits and “Try it today!”, in five slightly different orders.
The second problem is invented proof. Ask for persuasive copy without giving proof, and a model may fill the gap with confident numbers and customer quotes nobody said. In an ad, that’s more than a credibility problem. Ad platforms review claims, and misleading ones can get ads rejected.
Both problems come from the input, so the fix starts there.
What should an AI ad brief include?
Four things, each in a sentence or two.
| Brief field | Weak | Strong |
|---|---|---|
| Reader | Small business owners | A solo bookkeeper who chases late invoices every month |
| Awareness | (left out) | Problem-aware: knows late payments hurt, hasn’t looked for a tool |
| Offer | Our invoicing app | Automatic reminders that go out on the due date; free for the first month |
| Proof | (left out, so the model invents it) | [no customer results yet], our own screenshots of the reminder flow |
Writing “no customer results yet” in the brief matters. It tells the model to lean on how the product works instead of making up a result.
Add the placement too: a feed ad, a search ad and a story ad have different slots and different readers.
Which framework fits which ad?
Pick by the reader’s awareness. These are the defaults Copix’s framework selection uses for an ad, with the alternative to test against it.
| Awareness | First pick | Alternative | Ad angle |
|---|---|---|---|
| Unaware | AIDA | ACCA | Stop them with a scene they recognize |
| Problem-aware | PAS | BAB | Name the problem, one cost, the fix |
| Solution-aware | BAB | AIDA | Show the after and your bridge to it |
| Product-aware | 4Ps | PAS | Promise, picture, proof, a reason to act |
| Most aware | 4Ps | PAS | The offer and a real deadline |
These are starting points. Which one wins for your audience is something only a test can tell you. Our guide to copywriting frameworks explains each one, and before after bridge copywriting covers BAB with ad examples.
How long should each part of the ad be?
Write to the slot. The rules we use for a feed ad: keep the hook within the first 125 characters of primary text, since that’s roughly what shows before the “see more” cut, and keep the headline to about 40 characters. Platforms change their layouts and truncation varies by device, so check the current specs for your placement before you finalize.
Ask the model to state the character count of each line, then count yourself. Models are unreliable at counting characters.
The headline gets the same treatment as any hook. A mistake call-out (“If you chase invoices by hand, read this”) or a direct how-to with a constraint works better than a vague benefit. Our guide on how to write hooks has twelve patterns and the traps for each.
How do you check AI ad copy before it runs?
Go line by line with four questions.
- Is every claim true? Every number or comparison either comes from your proof list or gets cut.
- Is there one reader? If the ad could run for any product in your category, it’s too general.
- Does it fit the slot? Hook inside the visible text, headline within the limit.
- Does it read like a person? Strip the AI tells: hype words, stock openers, fake contrasts. See make AI writing sound human.
Then generate variations that differ in hook pattern or framework, not just wording. Five ads with the same angle test one idea.
When doesn’t AI help with ad copy?
When the hard part is the offer or the targeting, not the words. If an ad fails because the product doesn’t solve a problem people pay for, or because it’s shown to the wrong audience, better copy won’t fix it. AI also can’t tell you what your customers say about you. Interviews and support tickets give you the phrases that make an ad feel specific, and you have to collect them yourself.
Can a tool make AI ad copy better?
It can give your assistant the structure and checks above in every session. Copix’s copy_framework tool picks the framework for an ad from the reader’s awareness and returns the slot rule with the job of each beat. The hooks tool returns headline patterns for the format, with its character limit and banned openers, and in score mode grades each hook. humanize marks AI tells with their exact positions. None of them writes the ad; your assistant does, with your brief. If you run one campaign a quarter, the tables in this post cover it. If you write ads with an assistant every week, see the tools section or compare the plans.
FAQ
Can AI write Facebook and Google ads?
It can draft them well when the brief names the reader and their awareness, plus the offer and real proof. Each platform has its own slots and policies, so give the placement in the brief and check the current specs before launching.
How many ad variations should I ask AI for?
Ask for a few that differ in angle: different hook patterns or frameworks. Several rewordings of one idea only test one idea.
Will AI-written ads get rejected?
Ads are reviewed on what they say, not on who wrote them. Invented results and misleading claims are what cause trouble, and an unchecked AI draft is more likely to contain them.
Should I tell the AI my competitors’ ads?
You can describe the angles competitors use so the model avoids copying them. Don’t paste a competitor’s copy and ask for a rewrite; you’ll get the same ad with different words.
What’s the best prompt for AI ad copy?
There isn’t a magic prompt. A complete brief, a named framework and a named hook pattern do more than clever wording. Put “use [placeholder] for any claim you can’t support” in every request.