Image Editing nano-banana

Overview

• Method: POST
• Path: /v1/images/edits

Authentication

• Use HTTP Bearer Token, e.g.: Authorization: Bearer sk-xxxxx

---

Request Parameters (multipart/form-data)

Parameter	Type	Required	Description
image	file	Yes	1-6 images, PNG/JPG/WebP
prompt	string	Yes	Text description, max 32768 tokens
model	string	Yes	nano-banana / gemini-3-pro-image-preview etc.
response_format	string	No	b64_json/url
size	string	No	1:1/2:3/3:2/3:4/4:3/4:5/5:4/9:16/16:9/21:9/1k/2k/4k
aspect_ratio	string	No	2:3 etc. (pro series only)
n	number	No	1-10

---

Request Example

curl -X POST "https://api.gpt.ge/v1/images/edits" \
  -H "Authorization: Bearer sk-xxxx" \
  -F "image=@otter.png" \
  -F "mask=@mask.png" \
  -F "prompt=A cute otter baby wearing a beret." \
  -F "model=nano-banana" \
  -F "n=2" \
  -F "size=1024x1024"

---

Response Example (200)

{
  "created": 1725007743,
  "data": [{"url": "https://oaidalleapiprod..."}]
}