Guide
Why AI-generated ads underperform: generic words and no real person
Updated
AI-generated ads usually fall short because the script sounds like every other ad and nobody real stands behind the claim. A sharper picture alone does not fix that.
In short
- AI-generated ads usually underperform because the script is generic, nobody real stands behind it, and it looks like other ads.
- A 2024 NielsenIQ study of 2,000+ people found viewers call AI-generated ads more annoying, boring and confusing than traditional ads.
- An AI model writes the most typical ad for your category, unless you give it facts only you have.
- AI presenters are fine for explainers. Personal stories and reviews need a real person, because it happened to them.
- AI is best used for the editing: transcripts, cuts, captions and finding clips. Decide what the ad says yourself.
Why do AI-generated ads underperform?
There are three common reasons. A sharper picture alone does not fix any of them.
- The script is generic. It sounds like every other ad in your category, so nothing makes people stop.
- No real person stands behind the claim, so viewers have less reason to believe it.
- The ad looks like other brands' ads, because many of them use the same tools, styles and caption animations.
What research says about AI-generated ads
NielsenIQ, a market research company, tested AI-generated video ads on more than 2,000 people and published the results in December 2024.
- People described the AI-generated ads as more annoying, boring and confusing than traditional ads.
- Brain measurements showed weaker memory activity for AI-generated ads, even for the ones people rated high quality.
- Low-quality AI visuals took more effort to process, which pulled attention away from the message.
- The study measured reactions and memory, not sales. The rest of this page is advice, not a measured result.
This is the whole editor
Highlight a phrase and a clip lands on those exact words. No timeline, no keyframes, no layers.
Why AI-written scripts sound generic
An AI model writes what is most typical for your category, because that is what it has seen most often.
- The model does not know what makes your business different, like your real price or the question customers ask most.
- A longer prompt alone does not help much. What helps is giving it facts only you have: your price, your customers' questions and their own words.
- To check a script, remove your brand name and read it again. If a competitor could run it unchanged, rewrite it.
Do AI presenters work in ads?
AI presenters, also called AI avatars, are fine when the speaker only explains something. When viewers have to trust the speaker, use a real person.
Where an AI presenter works
| Type of ad | AI presenter | Why |
|---|---|---|
| Explaining how a product works | Fine | The speaker is only a narrator |
| Comparing two options | Fine | The facts do the work |
| A personal story or review | Use a real person | The story has to have happened to someone |
| Showing the product in hand | Use a real person | A generated product can look different from shot to shot |
| A claim viewers must believe | Use a real person | Nobody real stands behind it |
Type of ad: Explaining how a product works
- AI presenter
- Fine
- Why
- The speaker is only a narrator
Type of ad: Comparing two options
- AI presenter
- Fine
- Why
- The facts do the work
Type of ad: A personal story or review
- AI presenter
- Use a real person
- Why
- The story has to have happened to someone
Type of ad: Showing the product in hand
- AI presenter
- Use a real person
- Why
- A generated product can look different from shot to shot
Type of ad: A claim viewers must believe
- AI presenter
- Use a real person
- Why
- Nobody real stands behind it
Why AI ads from different brands look alike
When a whole category uses the same tools, the ads end up with the same style, pace and captions.
- People scroll past ads that look like ones they have already seen.
- Meta's Ad Library shows the ads other brands are running, so you can see how much your ads look like theirs.
How to fix an AI ad that underperforms
Keep the AI for the work it does well, and put real people and real facts back in.
- Film a real person, you or a customer, saying the main claim.
- Give the AI your own facts before it writes: your price, the question customers ask most and a customer's own words.
- Use AI presenters for explainers, and real people for stories and reviews.
- Show your real product, filmed on your phone, instead of a generated one.
- Pick a caption style and look your competitors are not already using.
What should AI do, and what should you do?
AI is good at repetitive editing work. It cannot decide what is true or important about your business.
What to give AI and what to keep
Transcript
- AI does it well
- Writing out what you said
- You should do it
- Deciding what is worth saying
Editing
- AI does it well
- Cutting pauses and timing captions
- You should do it
- Choosing the opening line
Clips
- AI does it well
- Finding a clip for a phrase
- You should do it
- Choosing which phrase needs a picture
Versions
- AI does it well
- Making more versions of an ad
- You should do it
- Choosing which idea deserves them
Facts
- AI does it well
- Nothing, it cannot know them
- You should do it
- Your price, your customers' questions and their words
| AI does it well | You should do it | |
|---|---|---|
| Transcript | Writing out what you said | Deciding what is worth saying |
| Editing | Cutting pauses and timing captions | Choosing the opening line |
| Clips | Finding a clip for a phrase | Choosing which phrase needs a picture |
| Versions | Making more versions of an ad | Choosing which idea deserves them |
| Facts | Nothing, it cannot know them | Your price, your customers' questions and their words |
Where Cutroom fits
Cutroom uses AI to edit a video you filmed yourself, so the words, the face and the product stay real.
- You upload one video of yourself talking, up to 3 minutes long.
- Cutroom cuts it, adds captions timed to your voice, puts b-roll on your words and drafts an on-screen headline for the opening.
- You get a finished 9:16 MP4, and you change it by editing the transcript, not a timeline.
- Cutroom also has AI presenters on Basic, at $39.99 a month, for the explainer ads where they work.
- A 30-second ad uses 110 credits, about $1.76 on any paid plan. Lite is $19.99 a month for 1,250 credits.
- Your first video is free, with no card, and you have 7 days to make it. It has a Cutroom watermark until you upgrade.
Questions people ask
- Why do AI-generated ads perform worse?
- Usually because the script is generic, no real person stands behind the claim, and the ad looks like other brands' AI ads. A sharper picture alone does not fix that.
- Do people dislike AI-generated ads?
- Many do. In a 2024 NielsenIQ study of more than 2,000 people, viewers called AI-generated ads more annoying, boring and confusing than traditional ads. Brain measurements also showed weaker memory activity for them.
- Are AI avatars good for ads?
- For explainers, yes. For personal stories, reviews and claims viewers must believe, use a real person, because it happened to them.
- Can I fix an AI-written script?
- Yes, by adding what only you know: your real price, the question customers ask most and a customer's own words. Keep the structure if it works and rewrite the sentences.
- Do Meta and TikTok penalise AI-generated ads?
- Not just for being made with AI. Meta's Advertising Standards and TikTok's Advertising Policies say when an ad needs an AI label. The bigger risk is that people scroll past a generic ad.
- What should I not automate in an ad?
- The message. Decide the opening line, the main claim, the proof and the offer yourself. Transcripts, cuts, captions and extra versions can be automated.
- Will an AI ad tool fix ads that are not selling?
- Only if the ads are the problem. If the offer or the audience is wrong, making ads faster will not fix it.
Film the ad yourself and let Cutroom do the editing. Your first video is free.
Try for freeYour first video is free, no card, and you have 7 days to make it. It carries a Cutroom mark; Lite at $19.99/month removes it