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Image generation API price per image

Outrun image models cost from $0.02 per image (GPT Image 2.5 Flare and GPT Image 2.5 Sunburst) to $0.09. Each of the 7 image models bills a flat price per image from one prepaid USD balance and one API key.

Prices as of , from the live price feed.

Get your API keyAll image prices

$0.10free API credit for eligible new accounts.

7 image models on one Outrun key

12 images × $0.02 = $0.18

GPT Image 2.5 Flare, the lowest price per image.

How is image generation billed?

Flat per image, so the cost is easy to predict before you send.

  • 1image = one flat price, whatever the prompt length
  • ×10ten images cost ten times the price; the table shows both
  • 1 keythe same key and USD balance as every text and video model

How much does each image model cost?

Every image model, sorted by price per image. Models with several sizes have one row per size.

Image models on OutrunUSD per image
ModelSizePer image10 images
GPT Image 2.5 Flaregpt-image-2.5-flareStandard$0.02$0.15
GPT Image 2.5 Sunburstgpt-image-2.5-sunburstStandard$0.02$0.15
Nano Banana / Gemini 3.1 Flash Imagegemini-3.1-flash-imageStandard$0.03$0.27
Nano Banana Pro / Gemini 3 Pro Imagegemini-3-pro-imageStandard$0.04$0.36
Seedream 5 Prodoubao-seedream-5-0-pro1K$0.05$0.43
GPT Image 2gpt-image-2Standard$0.06$0.60
Grok Imagine Imagegrok-imagine-imageStandard$0.06$0.60
Seedream 5 Prodoubao-seedream-5-0-pro2K$0.09$0.86

Prices as of , from the live price feed. Flat price per image; 10 images = 10 x the price.

How do I send an image request?

This is the example from the API reference. GPT Image 2 and Grok Imagine Image use the same request shape.

Request example
curl https://api.outrun.to/v1/images/generations \
  -H "Authorization: Bearer $OUTRUN_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "gemini-3-pro-image", "prompt": "A lighthouse at dawn, oil painting", "size": "16:9"}'

# Response: {"created": 1790000000, "data": [{"b64_json": "<base64 PNG>"}], "usage": {...}}

Image API questions

Less-restricted image models are on the uncensored image API page.

How much does an image generation API cost per image?

On Outrun, image models cost from $0.02 to $0.09 per image, depending on the model and size. The table lists every image model.

How is image generation billed?

At a flat price per generated image, from your prepaid USD balance. There is no subscription.

Do Gemini image models return more than one image?

No. Gemini image models return one image per request.

Do I need a separate account for each image model?

No. One Outrun key and one prepaid USD balance cover every image model and every other model on Outrun.

Will I get the model I pay for?

The model you pay for is the model that answers. Outrun never swaps in a cheaper model.

Does Outrun keep my prompts or images?

Outrun does not store your prompts, images or outputs unless you choose to save them.

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