gpt-image-2

General image generation, text/img-to-image, 27 fixed sizes.

Modes

text→img · img→img

Size

10 ratios × 1K/2K/4K (30 total) or auto

Seconds

—（image）

Refs

up to 5, optional

Billing

per image × resolution (1K/2K/4K)

Supported sizes

Model notes

• Aspect ratios (10): 1:1 · 3:2 · 2:3 · 4:3 · 3:4 · 5:4 · 4:5 · 16:9 · 9:16 · 21:9.
• size must be one of the 30 fixed sizes below or auto; other values are rejected upstream.
• Image models use the async /v1/videos endpoint; results are images, no quality / n params.
• Pass reference_images for image-to-image (up to 5).

Request example

{
  "model": "gpt-image-2",
  "prompt": "a neon fox, cinematic",
  "size": "1024x1024",
  "tier": "2k"
}