OpenAIMediumUltra

GPT Image 1

OpenAI's natively multimodal image generation model, served through the LLM gateway via the OpenAI Images API. Accurate in-image text rendering, strong instruction following, and fine-grained style control, billed by tokens.

40 credits

per image (approx, 1024×1024)

Natively multimodal image generation (text and image inputs, image outputs)

Accurate in-image text rendering

Strong instruction following and style control

Token-based billing: text input tokens (9,290 credits/1M) and image output tokens (74,320 credits/1M) are billed separately

Served through the LLM gateway via the OpenAI Images API

Run it right now

Test this model instantly in the Console Playground — no code required

Use with AI Assistant

Copy usage instructions for Claude, ChatGPT, or other AI

llms.txtllms.txt ↗

Quick Start

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "gpt-image-1",
  "input": {
    "model": "gpt-image-1",
    "prompt": "A storefront window poster that reads \"GRAND OPENING - 50% OFF\", warm evening light, photorealistic",
    "size": "1024x1024",
    "quality": "high"
  }
}'

Parameters

Parameter	Type	Required	Default	Description
`model`	string	Yes	gpt-image-1	Model identifier
`prompt`	string	Yes	-	A text description of the desired image
`size`	string	No	auto	Output image size 1024x10241536x10241024x1536auto
`quality`	string	No	auto	Rendering quality. Higher quality produces more image output tokens and therefore costs more lowmediumhighauto
`background`	string	No	auto	Set whether the background is transparent, opaque, or chosen automatically autotransparentopaque
`output_format`	string	No	png	Output image format pngjpegwebp
`n`	integer	No	1	Number of images to generate. Each image bills its own output tokens

Common Parameters

Common parameters used when calling POST /v1/predictions.

Parameter	Type	Required	Default	Description
`model`	string	Yes	-	Model identifier
`input`	object	Yes	-	Object containing the model-specific parameters from the table above
`output_folder`	string	No	-	Folder path for output files (max 256 chars, '..' not allowed)
`webhook_url`	string	No	-	Webhook URL to call on completion
`is_public`	boolean	No	false	If true, output files are also available via permanent public URLs

Examples

Image Generation

Generate an image via the OpenAI Images API

curl -X POST "https://api.core.today/v1/predictions" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: cdt_your_api_key" \
  -d '{
  "model": "gpt-image-1",
  "input": {
    "model": "gpt-image-1",
    "prompt": "A storefront window poster that reads \"GRAND OPENING - 50% OFF\", warm evening light, photorealistic",
    "size": "1024x1024",
    "quality": "high"
  }
}'

Tips & Best Practices

1Works with the OpenAI SDK - set base_url to https://ai.api.core.today/llm/openai/v1 and use client.images.generate()

2Billing is token-based: text input tokens at 9,290 credits/1M plus image output tokens at 74,320 credits/1M - larger sizes and higher quality produce more output tokens

3The ~40 credits per image figure assumes a 1024×1024 output; treat it as an estimate, not a flat rate

4Use GPT Image 1 Mini for drafts and iteration, then rerun the final prompt here