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Nano Banana Pro Text to Image
Gemini 3 Pro Image (Nano Banana Pro) is designed to tackle the most challenging image generation tasks by integrating state-of-the-art reasoning capabilities. It is the best model for complex and multi-turn image generation and editing, with higher accuracy and superior image quality. Supports configurable image size, aspect ratio, and output format.

Request Headers

string
required
Enum: application/json
string
required
Bearer authentication format: Bearer {{API Key}}.

Request Body

string
default:"1K"
Output image pixel dimensions (width*height). 1K (1024px), 2K (2048px), 4K (4096px). Defaults to 1KPossible values: 1K, 2K, 4K
object
Google search options
string
required
Text prompt describing the image to generate
string
default:"1:1"
Aspect ratio of the generated imagePossible values: 1:1, 3:2, 2:3, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9, 21:9
string
default:"image/png"
MIME type of the output image. Supports PNG, JPEG, and WebP formatsPossible values: image/png, image/jpeg, image/webp

Response

array
required
List of generated image URLs
object
Model grounding metadata. Returned when Google server-side tools (e.g., search) are invoked. Note: tool invocation depends on Google. Enabling the parameter makes the tool available but does not guarantee 100% tool invocation.