Google Nano Banana 2 Lite API | Pricing & Docs

google/nano-banana-2-lite/text-to-image

Nano Banana 2 Lite generates 1K images from text in seconds, with 15 aspect ratios and png, jpeg, or webp output at a low, flat per-image rate.

1. Get started

Use RunComfy's API to run google/nano-banana-2-lite/text-to-image. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/google/nano-banana-2-lite/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A cozy corner bookstore at golden hour, warm window light spilling over wooden shelves, a hand-lettered chalkboard sign reading \"NEW ARRIVALS\", a cat asleep on a stack of novels, soft photographic depth of field"
  }'

2. Authentication

Set the YOUR_API_TOKEN environment variable with your API key (manage keys in your Profile) and include it on every request as a Bearer token via the Authorization header: Authorization: Bearer $YOUR_API_TOKEN.

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/google/nano-banana-2-lite/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A cozy corner bookstore at golden hour, warm window light spilling over wooden shelves, a hand-lettered chalkboard sign reading \"NEW ARRIVALS\", a cat asleep on a stack of novels, soft photographic depth of field"
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

Provide a publicly reachable HTTPS URL. Ensure the host allows server-side fetches (no login/cookies required) and isn't rate-limited or blocking bots. Recommended limits: images ≤ 50 MB (~4K), videos ≤ 100 MB (~2–5 min @ 720p). Prefer stable or pre-signed URLs for private assets.

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text description of the image you want to generate.",
      "type": "string",
      "default": "A cozy corner bookstore at golden hour, warm window light spilling over wooden shelves, a hand-lettered chalkboard sign reading \"NEW ARRIVALS\", a cat asleep on a stack of novels, soft photographic depth of field"
    },
    "aspect_ratio": {
      "title": "Aspect Ratio",
      "description": "Output aspect ratio. Use auto to let the model pick a framing that fits the prompt. Extreme ratios such as 4:1 and 8:1 are supported.",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "16:9",
        "3:2",
        "4:3",
        "5:4",
        "1:1",
        "4:5",
        "3:4",
        "2:3",
        "9:16",
        "4:1",
        "1:4",
        "8:1",
        "1:8"
      ],
      "default": "auto"
    },
    "output_format": {
      "title": "Output Format",
      "description": "File format of the returned image.",
      "type": "string",
      "enum": [
        "png",
        "jpeg",
        "webp"
      ],
      "default": "png"
    },
    "system_prompt": {
      "title": "System Prompt",
      "description": "Optional system instruction that steers the model's persona and output style. Leave blank to omit.",
      "type": "string"
    },
    "thinking_level": {
      "title": "Thinking Level",
      "description": "Level of model thinking before rendering. minimal is faster and cheaper; high trades speed for stronger prompt reasoning and may increase cost.",
      "type": "string",
      "enum": [
        "minimal",
        "high"
      ],
      "default": "minimal"
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

RunComfy

RunComfy is the premier ComfyUI platform, offering ComfyUI online environment and services, along with ComfyUI workflows featuring stunning visuals. RunComfy also provides AI Models, enabling artists to harness the latest AI tools to create incredible art.

1. Get started

Use RunComfy's API to run google/nano-banana-2-lite/text-to-image. For accepted inputs and outputs, see the model's schema.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/google/nano-banana-2-lite/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A cozy corner bookstore at golden hour, warm window light spilling over wooden shelves, a hand-lettered chalkboard sign reading \"NEW ARRIVALS\", a cat asleep on a stack of novels, soft photographic depth of field"
  }'

3. API reference

Submit a request

Submit an asynchronous generation job and immediately receive a request_id plus URLs to check status, fetch results, and cancel.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/models/google/nano-banana-2-lite/text-to-image \
  --header "Content-Type: application/json" \
  --header "Authorization: Bearer <token>" \
  --data '{
    "prompt": "A cozy corner bookstore at golden hour, warm window light spilling over wooden shelves, a hand-lettered chalkboard sign reading \"NEW ARRIVALS\", a cat asleep on a stack of novels, soft photographic depth of field"
  }'

Monitor request status

Fetch the current state for a request_id ("in_queue", "in_progress", "completed", or "cancelled").

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/status \
  --header "Authorization: Bearer <token>"

Retrieve request results

Retrieve the final outputs and metadata for the given request_id; if the job is not complete, the response returns the current state so you can continue polling.

curl --request GET \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/result \
  --header "Authorization: Bearer <token>"

Cancel a request

Cancel a queued job by request_id; in-progress jobs cannot be cancelled.

curl --request POST \
  --url https://model-api.runcomfy.net/v1/requests/{request_id}/cancel \
  --header "Authorization: Bearer <token>"

4. File inputs

Hosted file (URL)

5. Schema

Input schema

{
  "type": "object",
  "title": "Input schema",
  "required": [
    "prompt"
  ],
  "properties": {
    "prompt": {
      "title": "Prompt",
      "description": "Text description of the image you want to generate.",
      "type": "string",
      "default": "A cozy corner bookstore at golden hour, warm window light spilling over wooden shelves, a hand-lettered chalkboard sign reading \"NEW ARRIVALS\", a cat asleep on a stack of novels, soft photographic depth of field"
    },
    "aspect_ratio": {
      "title": "Aspect Ratio",
      "description": "Output aspect ratio. Use auto to let the model pick a framing that fits the prompt. Extreme ratios such as 4:1 and 8:1 are supported.",
      "type": "string",
      "enum": [
        "auto",
        "21:9",
        "16:9",
        "3:2",
        "4:3",
        "5:4",
        "1:1",
        "4:5",
        "3:4",
        "2:3",
        "9:16",
        "4:1",
        "1:4",
        "8:1",
        "1:8"
      ],
      "default": "auto"
    },
    "output_format": {
      "title": "Output Format",
      "description": "File format of the returned image.",
      "type": "string",
      "enum": [
        "png",
        "jpeg",
        "webp"
      ],
      "default": "png"
    },
    "system_prompt": {
      "title": "System Prompt",
      "description": "Optional system instruction that steers the model's persona and output style. Leave blank to omit.",
      "type": "string"
    },
    "thinking_level": {
      "title": "Thinking Level",
      "description": "Level of model thinking before rendering. minimal is faster and cheaper; high trades speed for stronger prompt reasoning and may increase cost.",
      "type": "string",
      "enum": [
        "minimal",
        "high"
      ],
      "default": "minimal"
    }
  }
}

Output schema

{
  "output": {
    "type": "object",
    "properties": {
      "image": {
        "type": "string",
        "format": "uri",
        "description": "single image URL"
      },
      "video": {
        "type": "string",
        "format": "uri",
        "description": "single video URL"
      },
      "images": {
        "type": "array",
        "description": "multiple image URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      },
      "videos": {
        "type": "array",
        "description": "multiple video URLs",
        "items": {
          "type": "string",
          "format": "uri"
        }
      }
    }
  }
}

Nano Banana 2 Lite generates 1K images from text in seconds, with 15 aspect ratios and png, jpeg, or webp output at a low, flat per-image rate.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Nano Banana 2 Lite generates 1K images from text in seconds, with 15 aspect ratios and png, jpeg, or webp output at a low, flat per-image rate.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Nano Banana 2 Lite: Fast Text-to-Image on Models and API | RunComfy

Nano Banana 2 Lite generates 1K images from text in seconds, with 15 aspect ratios and png, jpeg, or webp output at a low, flat per-image rate.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema

Nano Banana 2 Lite: Fast Text-to-Image on Models and API | RunComfy

Nano Banana 2 Lite generates 1K images from text in seconds, with 15 aspect ratios and png, jpeg, or webp output at a low, flat per-image rate.

Table of contents

1. Get started

2. Authentication

3. API reference

Submit a request

Monitor request status

Retrieve request results

Cancel a request

4. File inputs

Hosted file (URL)

5. Schema

Input schema

Output schema