OhMyGPT
Images

Create image

POST
/v1/images/generations

Generate images from a text prompt. Image models are billed per image or per token, as listed in each model's pricing.

Authorization

ApiKeyAuth
headerAuthorization<token>

Request Body

application/json
  1. body
background?|

Set the background of the generated image(s). This parameter is only supported for the GPT image models. Must be one of transparent, opaque, or auto (default value). When auto is used, the model will automatically determine the best background for the image.

gpt-image-2.5-sunburst and gpt-image-2.5-flare, including their 2026-09-08 snapshots, support opaque and transparent backgrounds. Transparent backgrounds are available for supported GPT Image models. For gpt-image-2 and gpt-image-2-2026-04-21, this support is in preview. When using transparent, set the output format to png or webp.

Default"auto"
complexity?|

Computation spent planning the image, independently of rendering quality. Uses the image model's configured default when omitted. For SVG output, controls the reference image, independently of the SVG author's reasoning.

Value in"low""medium""high"null
frame_count?|

Number of frames for GIF output. Accepts integers from 2 through 16. Defaults to 9 when omitted. Only supported with output_format=gif. The requested size must satisfy the selected model's GIF size limits. GIF output does not support streaming, partial images, masks, or custom output compression. Requires access to the GIF preview for the selected model.

Range2 <= value <= 16
frame_duration_ms?|

Requested delay per GIF frame, in milliseconds. Defaults to 200 when omitted. GIF output rounds to the nearest 10 ms and caps the encoded delay at 655,350 ms per frame. Only supported with output_format=gif.

Range20 <= value
model*|

The GPT image model to use for image generation. Specify a model explicitly. Supported models include gpt-image-1-mini, gpt-image-1.5, gpt-image-2, gpt-image-2-2026-04-21, gpt-image-2.5-sunburst, gpt-image-2.5-sunburst-2026-09-08, gpt-image-2.5-flare, gpt-image-2.5-flare-2026-09-08, gpt-image-2.6-sunburst, gpt-image-2.6-flare, and chatgpt-image-latest.

gpt-image-1 was shut down on October 23, 2026. Use gpt-image-2.5-sunburst or gpt-image-2.5-flare instead.

moderation?|

Control the content-moderation level for images generated by the GPT image models. Must be either low for less restrictive filtering or auto (default value).

Default"auto"
n?|

The number of images to generate. Must be between 1 and 10.

Range1 <= value <= 10
Default1
output_compression?|

The compression level (0-100%) for the generated images. This parameter is only supported for the GPT image models with the webp or jpeg output formats, and defaults to 100.

Default100
output_format?|

The format in which the generated images are returned. This parameter is only supported for the GPT image models.

Default"png"
partial_images?|null
prompt*string

A text description of the desired image(s). The maximum length is 32000 characters.

quality?|

The quality of the image that will be generated.

  • auto (default value) will automatically select the best quality for the given model.
  • high, medium and low are supported for the GPT image models.
  • gpt-image-2.5-sunburst and gpt-image-2.5-flare, including their 2026-09-08 snapshots, also support xhigh and max.
Default"auto"
response_format?|Deprecated

Legacy response format parameter for retired image models. Unsupported for GPT image models, which always return base64-encoded images.

Value in"url""b64_json"null
safety_identifier?|

A stable identifier for an end user in your organization, used for safety monitoring and abuse detection. Hash a username or email address to avoid sending identifying information. A non-empty value takes precedence over the deprecated user parameter. If omitted, null, or empty, the API uses user when available. Learn more.

Lengthlength <= 128
size?||

The size of the generated images. For gpt-image-2, gpt-image-2-2026-04-21, gpt-image-2.5-sunburst, gpt-image-2.5-sunburst-2026-09-08, gpt-image-2.5-flare, and gpt-image-2.5-flare-2026-09-08, arbitrary resolutions are supported as WIDTHxHEIGHT strings, for example 1536x864. Width and height must both be divisible by 16 and the requested aspect ratio must be between 1:3 and 3:1. Resolutions above 2560x1440 are experimental, and the maximum supported resolution is 3840x2160. The requested size must also satisfy the model's current pixel and edge limits. The standard sizes 1024x1024, 1536x1024, and 1024x1536 are supported by the GPT image models; auto is supported for models that allow automatic sizing.

Default"auto"
stream?|

Generate the image in streaming mode. Defaults to false. See the Image generation guide for more information. This parameter is only supported for the GPT image models.

Defaultfalse
style?|Deprecated

Legacy style parameter for retired image models. Unsupported for GPT image models; describe the desired style in the prompt instead.

Value in"vivid""natural"null
svg?|

Selects the model and reasoning effort used to author SVG output. Requires output_format=svg and access to SVG model selection. When model selection is enabled, supply svg.model. When model selection is disabled, omit this object. The top-level model selects the image model that creates the reference image. SVG generation requires n=1 and does not support streaming, partial images, prompt_rewriter, or output_compression. SVG edits are not supported.

user?stringDeprecated

Deprecated: use safety_identifier instead. This parameter remains accepted for backward compatibility and is used when safety_identifier is omitted, null, or empty. Learn more.

Response Body

Successful response

application/json
  1. response

The response from the image generation endpoint.

background?string

The background parameter used for the image generation. Either transparent or opaque.

Value in"transparent""opaque"
created*integer

The Unix timestamp (in seconds) of when the image was created.

Formatunixtime
data?array<>

The list of generated images.

output_format?string

The output format of the generated image.

Value in"png""webp""jpeg""gif""svg"
quality?string

The quality of the image generated. One of low, medium, high, xhigh, or max.

Value in"low""medium""high""xhigh""max"
safety_identifier?|

The effective safety identifier used for safety monitoring and abuse detection. This is the non-empty safety_identifier from the request, or the deprecated user value when safety_identifier is omitted, null, or empty.

size?|

The image dimensions as a WIDTHxHEIGHT string, for example 1536x864.

svg_usage?

Token usage for the model that authored the SVG, separate from image rendering usage.

usage?

For gpt-image-1 only, the token usage information for the image generation.

Example Request
curl -X POST 'https://api.ohmygpt.com/v1/images/generations' \  -H 'Content-Type: application/json' \  -d '{  "model": "string",  "prompt": "string"}'
Example Response
{  "background": "transparent",  "created": 0,  "data": [    {      "b64_json": "string",      "revised_prompt": "string",      "url": "http://example.com"    }  ],  "output_format": "png",  "quality": "low",  "safety_identifier": "string",  "size": "string",  "svg_usage": {    "input_tokens": 0,    "model": "string",    "output_tokens": 0,    "reasoning_tokens": 0,    "total_tokens": 0  },  "usage": {    "input_tokens": 0,    "input_tokens_details": {      "image_tokens": 0,      "text_tokens": 0    },    "output_tokens": 0,    "output_tokens_details": {      "image_tokens": 0,      "text_tokens": 0    },    "total_tokens": 0  }}

Create embedding POST

Generate vector representations of text. Supports multiple embedding providers.

Retrieve model GET

Returns detailed information about a specific model. Model IDs use the `{creator}/{model}` form, so clients must send both path segments, for example `/v1/models/openai/gpt-4o`.