Why do AI-generated posters look the same?

Because a short prompt leaves layout, type and light unspecified, so the image model fills the gaps with its most common choices: a centred product, a soft warm glow, a plain gradient backdrop and text placed wherever it fits. Every poster made that way drifts toward the same average.

How do I make AI ads look less generic?

Decide the layout before you prompt: where the product sits, how big it is, where the headline goes and how much empty space stays empty. Then describe one idea, a specific type style, the light as the camera sees it and the real product colours. Keep the copy short enough to fit.

Is AI slop a model problem?

Mostly no. Current image models can render precise layouts and clean type when they are told exactly what to draw. Generic results usually come from vague prompts that hand every design decision to the model's defaults.

Guide · Design

Why AI posters all look the same (and how to fix it)

AI posters look alike because the prompt leaves the design decisions to the model. With no layout, type or light specified, the image model falls back on its most common choices: a centred product, a soft warm glow, a gradient backdrop and text squeezed in wherever it fits. The fix is to decide the layout first and let the model only render it.

The tell-tale signs of a generic AI poster

Dead-centre product

The product floats in the middle with equal space on every side. Nothing leads the eye anywhere.

The warm glow

Golden backlight, soft haze and a shiny reflection, whatever the product is.

Text with no home

The headline lands on top of the product or gets crammed into a corner, because no one gave it a space.

Too many words

Long copy forces the model to shrink and stack text until nothing reads first.

Drawn props

The prompt names a softbox or a podium, so the model draws the softbox and the podium.

A redrawn product

The label, logo or shape changes slightly, so it isn't quite your product any more.

Six fixes that work with any image model

1. Pick a layout before you write the prompt

Decide where the product sits, how much of the canvas it fills, where the headline goes and which area stays empty. Describe it in the prompt as positions ("product in the lower right third, headline across the top quarter"). Designers call this the composition, and it's the biggest single difference between an ad and a picture. Browse 1,000+ ad layouts for starting points.

2. Say one thing

Choose the one reason someone should care: the benefit, the occasion or the offer. One idea gives the poster a single focal point. Three ideas give it three competing ones.

3. Size the copy to the space

A headline of 3–6 words, an optional short line under it, and a call to action of 2–3 words. Make the headline at least twice the size of everything else so there's a clear reading order.

4. Describe the light as the camera sees it

Write "soft shadow falling to the left, bright highlight on the top edge", not the names of lights or equipment. Image models draw any gear you name.

5. Lock the product

Attach a photo of the real product and tell the model to keep its shape, label, logo, colours and printed text. Don't let it redraw them.

6. Choose type and colour on purpose

Name a type style that fits the category (a geometric sans for tech, a high-contrast serif for beauty) and a palette that leaves the product's own colours untouched.

Or let an art director do it

Poster Grammar runs these six steps for you. Its AI art director picks the idea and places your product and copy on a designer-approved layout. It chooses type and colour, checks crops and contrast, and only then writes the prompt for the image model you choose. See how the AI product ad generator works →

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