GPT Image 1.5 - Starrise AI

GPT Image 1.5 is OpenAI’s latest image generation model based on the GPT-5 architecture, available through the Starrise AI API. It’s 4× faster and 20% cheaper than GPT Image 1, with significantly improved text rendering and editing precision.

Key Capabilities

Text-to-image — Generate images from natural language descriptions
Image editing — Precisely edit existing images
Enhanced text — Dense text, small fonts, infographics, and UI mockups
World knowledge — Context-aware with built-in reasoning capabilities
Transparent background — Supports generating images with transparent backgrounds
Batch generation — Generate up to 4 images per request

Output Specs

Property	Values
Size	1024x1024, 1536x1024, 1024x1536, auto
Quality	low, medium, high
Format	png, webp, jpeg
Background	transparent, opaque

Quick Example

curl https://ai.alad.com/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-image-1.5",
    "prompt": "A cute cat floating in the Milky Way wearing a spacesuit",
    "size": "1024x1024",
    "quality": "high"
  }'

from openai import OpenAI

client = OpenAI(
    api_key="YOUR_API_KEY",
    base_url="https://ai.alad.com/v1"
)

response = client.images.generate(
    model="gpt-image-1.5",
    prompt="A cute cat floating in the Milky Way wearing a spacesuit",
    size="1024x1024",
    quality="high"
)

print(response.data[0].b64_json[:100])

Parameters

Parameter	Type	Required	Description
`model`	string	Yes	Must be `gpt-image-1.5`
`prompt`	string	Yes	Image description text
`n`	integer	No	Number of images to generate (1–4), default `1`
`size`	string	No	`1024x1024`, `1536x1024`, `1024x1536`, `auto`, default `auto`
`quality`	string	No	`low`, `medium`, `high`, default `medium`
`output_format`	string	No	`png`, `webp`, `jpeg`, default `png`
`background`	string	No	`transparent` or `opaque`, default `opaque`
`moderation`	string	No	`auto` or `low`, default `auto`
`output_compression`	integer	No	Compression level for jpeg/webp format (0–100)

API Reference

View the interactive API Playground for GPT Image 1.5.