GPT Image 2 Text to Image Image API

GPT Image 2 Text to Image creates images from prompts in 1K, 2K or 4K, with aspect-ratio controls and optional transparent backgrounds.

Last verified: 2026-09-18

About the GPT Image 2 Text to Image API

GPT Image 2 Text to Image creates images from prompts in 1K, 2K or 4K, with aspect-ratio controls and optional transparent backgrounds.

Available image sizes: 1K, 2K, and 4K
Operations: generation
Local cost: 1K: 40 credits / 2K: 60 credits / 4K: 90 credits
Result delivery: asynchronous task polling

Best uses for GPT Image 2 Text to Image

Text-led image creationReview the request contract below before choosing this model for production traffic.

Transparent product assetsReview the request contract below before choosing this model for production traffic.

Resolution-based generation budgetsReview the request contract below before choosing this model for production traffic.

Model summary

Credit cost: 1K: 40 credits / 2K: 60 credits / 4K: 90 credits
Output type: image
Operations: generation
Image sizes: 1K, 2K, 4K

Generation request

POST /v1/images/generations

json

{  "model": "gpt-image-2-text-to-image",  "prompt": "A cinematic product photograph with soft studio lighting",  "aspect_ratio": "auto",  "image_size": "1K",  "response_format": "url"}

Image field contract

Field	Use	Values
`model`	Required model ID	gpt-image-2-text-to-image
`prompt`	Required generation or editing instruction	1–20,000 characters
`aspect_ratio`	Output ratio	auto, 1:1, 3:2, 2:3, 4:3, 3:4, 16:9, 9:16, 2:1, 1:2, 3:1, 1:3, 21:9, 9:21, 5:4, 4:5
`image_size`	Resolution tier	1K, 2K, 4K
`image_urls`	Required only for edits	1–16 public HTTPS URLs
`background`	Optional background mode	auto, opaque, transparent
`response_format`	Optional	url

At 2K and 4K, ratios 5:4, 4:5, 3:1, 1:3 and 9:21 are unavailable. Use image_size for the resolution tier; size is not supported.

Review the complete image API guide.

GPT Image 2 Text to Image API FAQ

What can GPT Image 2 Text to Image do?

GPT Image 2 Text to Image supports asynchronous generation. GPT Image 2 Text to Image creates images from prompts in 1K, 2K or 4K, with aspect-ratio controls and optional transparent backgrounds.

Which output sizes does GPT Image 2 Text to Image support?

GPT Image 2 Text to Image supports 1K, 2K, and 4K. Use the exact model ID and size fields documented on this page so the request can be validated locally.

How many credits does GPT Image 2 Text to Image use?

The current local price is 1K: 40 credits / 2K: 60 credits / 4K: 90 credits. The task stores its quoted cost when it is created.