How much does it cost?

It depends on the model and the settings, and the exact price is on the Generate button before you start. The lowest here is Z-Image: from 0.4 credits per image. An image that fails costs nothing: its credits come back automatically.

Can I try it for free?

Yes. Every new account gets 10 free credits to start on the fast models, with no card; every other model comes with a plan from $10 a month. The free credits make 25 images with Z-Image.

Which model should I pick?

Nano Banana Pro for photographs and edits, GPT Image for text and layouts such as posters and packaging, Seedream or FLUX for art and colour, and Recraft for flat illustration. The comparisons page puts them side by side.

Can I edit only part of an image?

Yes: add the image as a reference and say what to change and what to keep. Models that take references change only what you name, though fine detail can shift; check the result at full size.

AI image generator

Describe a picture, or add your own photos as references, and get it back from the model you pick. RenderHour runs 9 image models on one balance of credits: Nano Banana Pro for photorealism and precise edits, GPT Image for clean text and layouts, Seedream for colour and composition. Switch models in one click, compare the results, and turn the best one into a video on the Video page.

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Models that do it

Nano Banana ProPhotorealism and precise editsFrom 10.75 credits per imageTry Nano Banana Pro
GPT Image 2.6OpenAI’s newest, for dense text and layoutsFrom 5.5 credits per imageTry GPT Image 2.6
Seedream 5.0 ProRich colour and compositionFrom 4.75 credits per imageTry Seedream 5.0 Pro
Nano Banana 2.1Sharper detail up to 4KFrom 3 credits per imageTry Nano Banana 2.1
FLUX 3 ImageNatural light and skinFrom 3.5 credits per imageTry FLUX 3 Image
GPT Image 2Clean text and layoutsFrom 34 credits per imageTry GPT Image 2
Grok Imagine 2.0Bold, stylised looksFrom 4.25 credits per imageTry Grok Imagine 2.0
Recraft V4.1Design assets and clean illustrationsFrom 2.5 credits per imageTry Recraft V4.1
Z-ImageThe cheapest image on the listFrom 0.4 credits per imageTry Z-Image

How it works

Open the Image page and pick one of the models below.
Write the prompt: the subject, the style, the setting and the light.
Pick a size and, where offered, a resolution. The price is on the Generate button.
Generate. A failed run costs nothing, and every result is kept in Assets.

Tips

Give the subject, the setting, the style and the light, in that order.
Put words that must appear in the picture in quotes, and keep them short.
Add a product photo as a reference and say what to keep: the label, the shape, the colours.
Run the same prompt on two models: they share one balance, so comparing costs only the runs.

Questions

How much does it cost?: It depends on the model and the settings, and the exact price is on the Generate button before you start. The lowest here is Z-Image: from 0.4 credits per image. An image that fails costs nothing: its credits come back automatically.
Can I try it for free?: Yes. Every new account gets 10 free credits to start on the fast models, with no card; every other model comes with a plan from $10 a month. The free credits make 25 images with Z-Image.
Which model should I pick?: Nano Banana Pro for photographs and edits, GPT Image for text and layouts such as posters and packaging, Seedream or FLUX for art and colour, and Recraft for flat illustration. The comparisons page puts them side by side.
Can I edit only part of an image?: Yes: add the image as a reference and say what to change and what to keep. Models that take references change only what you name, though fine detail can shift; check the result at full size.