Image model by Google
Nanobanana2 API
model: nanobanana-2-beta
Call Nanobanana2 with your KeelRouter API key, the same key you use for every other model. From $0.045 per image, paid per call from a prepaid balance. Failed calls are free.
Pricing
| Option | Price |
|---|---|
| 1K | $0.045 per image |
| 2K | $0.0583 per image |
| 4K | $0.0874 per image |
Call it
Async: POST /v1/images/generations returns a taskId; poll the same path with ?task_id= or pass a callback_url.
curl https://api.keelrouter.com/v1/images/generations \
-H "Authorization: Bearer $KEELROUTER_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "nanobanana-2-beta",
"prompt": "A lighthouse at dawn, watercolor",
"resolution": "1k"
}'Parameters
| Name | Type | Notes |
|---|---|---|
| model | string | Required. nanobanana-2-beta |
| prompt | string | Required. |
| image_url | string | |
| image_urls | array | |
| aspect_ratio | string | One of auto, 1:1, 16:9, 9:16, 4:3, 3:4, 3:2, 2:3. Default auto. |
| resolution | string | One of 1k, 2k, 4k. Default 1k. |
| callback_url | string | Optional https URL; we POST the result when the task ends |
FAQ
- How much does the Nanobanana2 API cost on KeelRouter?
- From $0.045 per image. You pay per call from a prepaid USD balance; failed calls are not charged.
- How do I call Nanobanana2?
- POST to /v1/images/generations with model "nanobanana-2-beta". You get a taskId back; poll the same endpoint with ?task_id= or pass a callback_url.
- Is this the official Nanobanana2 API?
- No. KeelRouter is an independent API gateway. Requests run on Nanobanana2 through our upstream providers, and the image model keeps its own safety filters.
- How long are results kept?
- Result files are kept for 30 days, then deleted. Download what you want to keep.
More from Google
KeelRouter is an independent service and is not affiliated with Google. Nanobanana2 is a trademark of its owner, used here only to name the model a request runs on.