OpenAI

This page is auto-generated from model configurations. Last updated: 2026-11-02.

This reference lists all available OpenAI image generation models and their parameters. Use these parameter names when calling the Generation API.

• GPT Image 2
• GPT Image 2.5 Flare
• GPT Image 2.5 Sunburst

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GPT Image 2

OpenAI GPT Image 2 for high-fidelity image generation and editing (Modal)

Model ID: model_openai-gpt-image-2

Capabilities: txt2img, img2img

LLM Markdown: https://app.scenario.com/api/models/model_openai-gpt-image-2/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
prompt	string	Yes	-	-	-	-	Text description of desired generation or edit.
referenceImages	file_array	No	-	-	-	-	Reference images for editing. Each image must be under 50 MB.
mask	file	No	-	-	-	-	PNG mask for inpainting, same dimensions as the first reference image. OpenAI uses the alpha channel only: fully transparent pixels are edited, fully opaque pixels are preserved. RGB white/black is ignored if there is no alpha. Export PNG with transparency — do not flatten. If you paint a white-on-black mask, convert the white (edit) region to transparent.
numOutputs	number	No	1	1	10	-	Number of images to generate
width	number	No	-	16	3840	-	Output width in pixels.
height	number	No	-	16	3840	-	Output height in pixels.
quality	string	No	auto	-	-	auto, high, medium, low	Generation quality
background	string	No	auto	-	-	auto, opaque	Background option.

GPT Image 2.5 Flare

OpenAI GPT Image 2.5 Flare for fast, high-quality everyday image generation and editing.

Model ID: model_openai-gpt-image-2-5-flare

Capabilities: txt2img, img2img

LLM Markdown: https://app.scenario.com/api/models/model_openai-gpt-image-2-5-flare/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
prompt	string	Yes	-	-	-	-	Describe the image you want to create, or how to edit your reference images. Plain, natural language works well.
referenceImages	file_array	No	-	-	-	-	Images to edit or build from (up to 10). Required if you provide a mask.
mask	file	No	-	-	-	-	An optional PNG that marks which parts of the first reference image to change. It uses transparency: fully transparent areas are edited, fully opaque areas are kept. Export a PNG with real transparency (don’t flatten it). If you’ve drawn a white-on-black mask, convert the white “edit” areas to transparent first.
numOutputs	number	No	1	1	10	-	How many images to create from the same prompt (1-10).
width	number	No	-	16	3840	-	The output width in pixels.
height	number	No	-	16	3840	-	The output height in pixels.
quality	string	No	auto	-	-	auto, low, medium, high, xhigh, max	How much effort goes into the image. Higher levels look better but cost more; Auto lets the model choose.
background	string	No	auto	-	-	auto, opaque, transparent	Whether the background is solid (Opaque) or see-through (Transparent). Auto lets the model decide.

GPT Image 2.5 Sunburst

OpenAI GPT Image 2.5 Sunburst, the most capable GPT Image model for generation and editing where precision matters most.

Model ID: model_openai-gpt-image-2-5-sunburst

Capabilities: txt2img, img2img

LLM Markdown: https://app.scenario.com/api/models/model_openai-gpt-image-2-5-sunburst/markdown

Parameter	Type	Required	Default	Min	Max	Allowed Values	Description
prompt	string	Yes	-	-	-	-	Describe the image you want to create, or how to edit your reference images. Plain, natural language works well.
referenceImages	file_array	No	-	-	-	-	Images to edit or build from (up to 10). Required if you provide a mask.
mask	file	No	-	-	-	-	An optional PNG that marks which parts of the first reference image to change. It uses transparency: fully transparent areas are edited, fully opaque areas are kept. Export a PNG with real transparency (don’t flatten it). If you’ve drawn a white-on-black mask, convert the white “edit” areas to transparent first.
numOutputs	number	No	1	1	10	-	How many images to create from the same prompt (1-10).
width	number	No	-	16	3840	-	The output width in pixels.
height	number	No	-	16	3840	-	The output height in pixels.
quality	string	No	auto	-	-	auto, low, medium, high, xhigh, max	How much effort goes into the image. Higher levels look better but cost more; Auto lets the model choose.
background	string	No	auto	-	-	auto, opaque, transparent	Whether the background is solid (Opaque) or see-through (Transparent). Auto lets the model decide.