Model parameters

Use client.images.generate for generation and client.images.edit for edits. See the image generation guide for API setup and request examples.

Parameter	GPT Image 1.5
model	gpt-image-1.5
quality	low, medium, high, or auto
size	1024x1024, 1024x1536, 1536x1024, or auto
output_format	png, jpeg, or webp
output_compression	0 to 100, for JPEG or WebP output only
background	Set transparent explicitly for transparent output; use PNG or WebP
input_fidelity	low or high; high preserves input details, while quality controls output generation. Omit this parameter when migrating to GPT Image 2, which always uses high input fidelity.

  <header className="not-prose mb-8">
    <h2
      id="gpt-image-1-guide"
      className="m-0 text-3xl font-semibold text-default"
    >
      \{"GPT Image 1 reference"\}
    </h2>
    

      Overview and request settings for existing GPT Image 1 workflows.
    

  </header>