OpenAI's most capable image generation and editing model. It accepts text and image inputs and produces images with low, medium, high, xhigh, max, and auto quality settings.
GPT Image 2.5 Sunburst (openai/gpt-image-2.5-sunburst) is a image model from OpenAI, released 2026-09-10. Pricing via AIgateway: $0.030 per image. Call it via https://api.aigateway.sh/v1/images/generations — set model="openai/gpt-image-2.5-sunburst".
curl https://api.aigateway.sh/v1/images/generations \
-H "Authorization: Bearer $AIGATEWAY_API_KEY" \
-H "Content-Type: application/json" \
-d '{"model":"openai/gpt-image-2.5-sunburst","prompt":"a serene cyberpunk city at dusk"}'{
"model": "openai/gpt-image-2.5-sunburst",
"prompt": "A cyberpunk cat at sunset, cinematic lighting",
"n": 1,
"size": "1024x1024",
"response_format": "url" // or "b64_json"
}{
"created": 1776947082,
"data": [
{ "url": "https://media.aigateway.sh/img/abc123.png" }
// or { "b64_json": "iVBORw0KGgoAAAANSUhEU..." }
]
}from openai import OpenAI
client = OpenAI(base_url="https://api.aigateway.sh/v1", api_key="sk-aig-...")
r = client.images.generate(
model="openai/gpt-image-2.5-sunburst",
prompt="a cyberpunk cat at sunset",
size="1024x1024",
)
print(r.data[0].url)