Nano Banana 2.1 image generation
nano-banana-2-1Google's fast image model: crisp text in images, multi-image editing and up to 4K output. Pass reference images to edit. Compared with other image tools: mid-priced. Price: from $0.047 per image, charged only on success. Price depends on resolution: 1K $0.047, 2K $0.070, 4K $0.155 (default 1K). One call = one image.
Tool call template
Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.
{
"id": 1,
"jsonrpc": "2.0",
"method": "tools/call",
"params": {
"arguments": {
"prompt": "<prompt>"
},
"name": "nano-banana-2-1"
}
}Input Schema
| Name | Required | Description | Default |
|---|---|---|---|
| prompt | Yes | What to create or change | |
| resolution | No | Output resolution; sets the price. Default 1K | |
| image_input | No | Reference or source image URLs (https), optional | |
| aspect_ratio | No | Aspect ratio, default match_input_image | |
| output_format | No |