openai/gpt-image-1.5

OpenAI's latest image generation model with better instruction following and adherence to prompts

Capabilities

Reference Images

Community model (estimated from hardware time)

Name	Type	Description	Default	Constraints
`prompt` *	string	A text description of the desired image	`—`	—
`aspect_ratio`	string	The aspect ratio of the generated image	`"1:1"`	1:1 3:2 2:3
`background`	string	Set whether the background is transparent or opaque or choose automatically	`"auto"`	auto transparent opaque
`input_fidelity`	string	Control how much effort the model will exert to match the style and features, especially facial features, of input images	`"low"`	low high
`input_images`	array	A list of images to use as input for the generation	`—`	—
`moderation`	string	Content moderation level	`"auto"`	auto low
`number_of_images`	integer	Number of images to generate (1-10)	`1`	min: 1, max: 10
`openai_api_key`	string (password)	Your OpenAI API key (optional - uses proxy if not provided)	`—`	—
`output_compression`	integer	Compression level (0-100%)	`90`	min: 0, max: 100
`output_format`	string	Output format	`"webp"`	png jpeg webp
`quality`	string	The quality of the generated image	`"auto"`	low medium high auto
`user_id`	string	An optional unique identifier representing your end-user. This helps OpenAI monitor and detect abuse.	`—`	—

prompt required string

A text description of the desired image

aspect_ratio string

The aspect ratio of the generated image

Default: "1:1"

1:1 3:2 2:3

background string

Set whether the background is transparent or opaque or choose automatically

Default: "auto"

auto transparent opaque

input_fidelity string

Control how much effort the model will exert to match the style and features, especially facial features, of input images

Default: "low"

low high

input_images array

A list of images to use as input for the generation

moderation string

Content moderation level

Default: "auto"

auto low

number_of_images integer

Number of images to generate (1-10)

Default: 1 min: 1, max: 10

openai_api_key string

Your OpenAI API key (optional - uses proxy if not provided)

output_compression integer

Compression level (0-100%)

Default: 90 min: 0, max: 100

output_format string

Output format

Default: "webp"

png jpeg webp

quality string

The quality of the generated image

Default: "auto"

low medium high auto

user_id string

An optional unique identifier representing your end-user. This helps OpenAI monitor and detect abuse.

Version: 118f53498ea7 Updated: 2/26/2026 3.3M runs