GPT Image 1

OpenAI GPT Image 1 image generation model. Generate and edit images from text prompts.

GPT Image 1 is OpenAI’s autoregressive image generation model, available through AnyFast API. It generates high-quality images from text prompts with precise text rendering and multi-style support.

Key capabilities

• Text-to-Image — Generate images from natural language descriptions
• Multi-style — Photorealism, illustration, anime, vector, 3D, data visualization
• Text rendering — Accurate typography for posters, UI mockups, and labels
• Transparent background — Generate images with transparent backgrounds
• Batch generation — Generate up to 4 images per request

Output specifications

Property	Value
Sizes	1024x1024, 1536x1024, 1024x1536, auto
Quality	low, medium, high
Formats	png, webp, jpeg
Background	transparent, opaque

Quick example

cURL

curl https://www.anyfast.ai/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gpt-image-1",
    "prompt": "A cute cat wearing a space suit floating in the galaxy",
    "size": "1024x1024",
    "quality": "high"
  }'

from openai import OpenAI

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

response = client.images.generate(
    model="gpt-image-1",
    prompt="A cute cat wearing a space suit floating in the galaxy",
    size="1024x1024",
    quality="high"
)

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

Parameters

Parameter	Type	Required	Description
model	string	Yes	Must be gpt-image-1
prompt	string	Yes	Text description of the desired image
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 (0–100).

API Reference

View the interactive API playground for GPT Image 1.