Model reference
GPT Image 1.5
OpenAI visual model with guided text prompt adherence and dual rendering quality settings.
| Property | Value |
|---|---|
modelSlug | gpt-image-1-5 |
| Kind | Image |
| Maker | OpenAI |
Copies per request (variations) | 1 to 5 |
| How the cost is counted | per copy, at a rate that depends on quality |
| Over MCP | yes, with the generate tool |
Credit amounts are left out because they change. The lowest price is creditCost on GET /v1/models, and POST /v1/jobs answers with the exact creditCost of a request.
input fields
Send the fields below inside the input object. A field you leave out takes its Default. Unknown field names are dropped without an error, so check the spelling if a setting seems to have no effect.
| Field | Type | Required | Default | Rules |
|---|---|---|---|---|
prompt | string | yes | – | Up to 20,000 characters |
reference_images | string[] (image upload ids) | – | – | Reference images. Up to 16 files |
aspect_ratio | string (one of) | – | 1:1 | 1:1, 2:3, 3:2 |
quality | string (one of) | – | medium | medium, high |
Rules by setting
This model runs a different version depending on what you send. The rules below are checked before any credits move; a request that breaks one is refused with 400 and a message naming the field.
Without a reference file
- Takes no files in
reference_images; a request that fills one is refused.
With a reference file
reference_images: required; up to 16 files; at most 10 MB per file.
Example request
{
"modelSlug": "gpt-image-1-5",
"input": {
"prompt": "Product photo of white running shoes on a river stone, soft side light in the morning"
}
}