When using the model "Google: Nano Banana Pro (Gemini 3 Pro Image Preview)", I found that the "image_size" parameter could not be used. #25
Description
I hope the author can help answer this! @mattapperson @subtleGradient @mfbx9da4 @sheldonvaughn @louisgv
`from openai import OpenAI
client = OpenAI(
base_url="https://openrouter.ai/api/v1",
api_key=key,
)
messages = [
{
"role": "user",
"content": [
{
"type": 'text',
"text": 'xxxxx'
},
{
"type": 'image_url',
"image_url": {
"url": '',
}
}
],
}
]
aspect_ratio = "9:16" # "1:1","2:3","3:2","3:4","4:3","4:5","5:4","9:16","16:9","21:9"
resolution = "2K" # "1K", "2K", "4K"
response = client.chat.completions.create(
model="google/gemini-3-pro-image-preview",
messages=messages,
modalities=["image", "text"],
extra_body={
"image_config": {
"aspect_ratio": aspect_ratio,
"image_size": resolution
}
}
)
try:
open("./response.txt", 'w').write(response.model_dump_json(indent=2))
except Exception as e:
print(e)
response = response.choices[0].message
if response.images:
for image in response.images:
image_url = image['image_url']['url'] # Base64 data URL
open("./t.png", 'wb').write(base64.b64decode(image_url.split(',')[1]))`