gemini-3-pro-image-preview

POST

/v1beta/models/{model}:generateContent/

The Gemini 3 Pro Image Preview revolutionizes the landscape of AI image generation.Known internally as "Nano Banana Pro", this model is the first to deeply merge the reasoning power of a large language model with image generation, enabling a previously unimaginable combination of features: native 4K resolution output, near-perfect multilingual text rendering, real-time data anchoring based on Google searches, and true multi-round conversational image editing.For development teams and businesses that need to generate hundreds or even thousands of images per day, choosing the right image generation model directly impacts product quality, development efficiency, and operational costs.

Actual API Endpoint: * * post https://tokenhot.ai/v1beta/models/ {model}: generateContent/

Model Code: * * gemini-3-pro-image-preview

Request

Authorization

Bearer Token

Provide your bearer token in the

Authorization

header when making requests to protected resources.

Example:

Authorization: Bearer ********************

Path Params

Body Params application/jsonRequired

Examples

Responses

🟢200

application/json

Request successful

Body

🟠401

🟠429

🔴500

Request Example

Shell

JavaScript

Java

Swift

curl --location --request POST '/v1beta/models/gemini-3-pro-image-preview:generateContent/' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data-raw '{
    "contents": [
        {
            "role": "user",
            "parts": [
                {
                    "text": "draw a cat"
                }
            ]
        }
    ],
    "generationConfig": {
        "responseModalities": [
            "TEXT",
            "IMAGE"
        ],
        "imageConfig": {
            "aspectRatio": "16:9",
            "imageSize": "2k"
        }
    }
}'

Response Example

{
    "candidates": [
        {
            "content": {
                "role": "string",
                "parts": [
                    {}
                ]
            },
            "finishReason": "string",
            "safetyRatings": [
                {}
            ]
        }
    ],
    "usageMetadata": {
        "promptTokenCount": 0,
        "candidatesTokenCount": 0,
        "totalTokenCount": 0
    }
}

Modified at 2026-03-25 06:34:43

gemini-2.5-flash-image

gemini-3.1-flash-image-preview