# Nano Banana Pro text to image

Needs prompt. Served by fal.ai.

Nano Banana Pro (Gemini 3 Pro Image), text to image, served by fal.ai. The OpenAPI schema for the fal-ai/nano-banana-pro queue. Price: $0.15 per image; +$0.015 per call with web search. Waits up to 40 s for the result; if the generation takes longer, the run stays RUNNING and returns a request_id; poll fal/status and fetch fal/result with model "fal-ai/nano-banana-pro" and that request_id. Billed once, when the result is ready; a generation that fails is refunded.

- Tool ID: `fal/nano-banana-pro`
- Name in the catalog: Nano Banana Pro (Gemini 3 Pro Image), text to image
- Provider: [fal.ai](/providers/fal.md)
- Capability: [Nano Banana](/tools/image-generation/nano-banana.md)
- Price: from $0.15 per image
- Authentication: an authorised Agentik workspace is required for execution, including zero-price tools.

## Pricing contract

The provider’s price, with no markup. Billed for measured usage.


```json
{
  "model": "per_unit",
  "amountUsd": 0.15,
  "unitsField": "num_images",
  "unitsDefault": 1,
  "maxUnits": 4,
  "multipliers": [
    {
      "when": {
        "field": "enable_web_search",
        "truthy": true
      },
      "addUsd": 0.015
    }
  ]
}
```

Pricing source: [https://fal.ai/models/fal-ai/nano-banana-pro](https://fal.ai/models/fal-ai/nano-banana-pro). $0.15 per image; +$0.015 per call with web search..

Price verification date: 2026-10-08.

## Complete input schema


```json
{
  "type": "object",
  "properties": {
    "limit_generations": {
      "default": true,
      "type": "boolean",
      "description": "Experimental parameter to limit the number of generations from each round of prompting to 1. Set to `True` to to disregard any instructions in the prompt regarding the number of images to generate.",
      "title": "Limit Generations"
    },
    "aspect_ratio": {
      "enum": [
        "auto",
        "21:9",
        "16:9",
        "3:2",
        "4:3",
        "5:4",
        "1:1",
        "4:5",
        "3:4",
        "2:3",
        "9:16"
      ],
      "type": "string",
      "default": "1:1",
      "description": "The aspect ratio of the generated image.",
      "title": "Aspect Ratio"
    },
    "output_format": {
      "title": "Output Format",
      "default": "png",
      "type": "string",
      "description": "The format of the generated image.",
      "enum": [
        "jpeg",
        "png",
        "webp"
      ]
    },
    "system_prompt": {
      "maxLength": 50000,
      "default": "",
      "type": "string",
      "description": "Optional system instruction that steers the model's persona and output style across the request. Leave blank to omit; when provided, it is sent as the system instruction to Gemini (or as a system message on OpenAI-compatible providers).",
      "title": "System Prompt"
    },
    "resolution": {
      "title": "Resolution",
      "default": "1K",
      "type": "string",
      "description": "The resolution of the image to generate.",
      "enum": [
        "1K",
        "2K",
        "4K"
      ]
    },
    "safety_tolerance": {
      "title": "Safety Tolerance",
      "default": "4",
      "type": "string",
      "description": "The safety tolerance level for content moderation. 1 is the most strict (blocks most content), 6 is the least strict.",
      "enum": [
        "1",
        "2",
        "3",
        "4",
        "5",
        "6"
      ]
    },
    "seed": {
      "type": "integer",
      "description": "The seed for the random number generator.",
      "title": "Seed"
    },
    "prompt": {
      "maxLength": 50000,
      "title": "Prompt",
      "minLength": 3,
      "description": "The text prompt to generate an image from.",
      "type": "string"
    },
    "num_images": {
      "title": "Number of Images",
      "minimum": 1,
      "default": 1,
      "type": "integer",
      "description": "The number of images to generate.",
      "maximum": 4
    },
    "enable_web_search": {
      "default": false,
      "type": "boolean",
      "description": "Enable web search for the image generation task. This will allow the model to use the latest information from the web to generate the image.",
      "title": "Enable Web Search"
    }
  },
  "required": [
    "prompt"
  ],
  "additionalProperties": false
}
```

## Published example

This is the provider tool’s published example. Replace example values with the user’s requested inputs, respecting the schema; do not execute an example merely to test a connection.


```json
{
  "tool_id": "fal/nano-banana-pro",
  "input": {
    "prompt": "a small red cube on a white table, studio light",
    "num_images": 1,
    "resolution": "1K"
  }
}
```

## Execute and retrieve

Inspect again before execution, explain the price and obtain the required authority. Use MCP run_tool or POST /v1/run with this tool ID, valid input and an idempotency key. Save the returned run ID and follow the actual state. If Agentik answers that the tool is temporarily unavailable, do not retry it blindly; use discovery to propose an alternative.

This tool uses deferred settlement. Follow its returned task/run instructions; preserve the existing reservation until the result is reconciled.

A partial or uncertain result can still have consumed provider resources. Consult [billing](/docs/billing.md), [idempotency](/docs/idempotency.md) and [asynchronous results](/docs/async.md).

[Provider documentation](https://fal.ai/models/fal-ai/nano-banana-pro)

[REST inspection](https://api.agentik.cc/v1/tools/fal/nano-banana-pro) · [OpenAPI](/openapi.json) · [Connection guide](/connect.md)

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[HTML page](/providers/fal/nano-banana-pro) · [Agent index](/llms.txt)