Check Nano Banana 2 Lite availability, inputs, parameters, file requirements, credit pricing, and request examples for Rivya Public API v1. Model ID: nano-banana-2-lite.

Available via APIText or URL ready; reference modes use Files APIImage

API model ID

nano-banana-2-lite

Inputs

text, file

Files API

Required for reference modes

Credit pricing

Credit rate: 3 per image The final cost is rounded up to whole credits.

Capability

Image

Billing

FIXED

Prompt limit

20000 characters

Request fields

Set model at the top level. Put model-specific controls and reference inputs in params, using the format documented for this model.

Key	Type	Required	Default	Description
model	string	Yes	nano-banana-2-lite	Set model to nano-banana-2-lite.
prompt	string	Yes	-	Maximum 20000 characters for this model.
params	object	No	-	The model-specific params object. Use the documented keys and reference-file format for this model.
client_request_id	string	No	-	Optional ID for tracing this request in your system. It does not replace Idempotency-Key.

Model parameters

Key	Type	Required	Default	Range	Options	Description
aspect_ratio	select	No	auto	-	auto, 1:1, 1:4, 1:8, 2:3, 3:2, 3:4, 4:1, 4:3, 4:5, 5:4, 8:1, 9:16, 16:9, 21:9	Aspect ratio

Upload policy

Upload reference files through Files API first. Keep the original URLs, verified metadata, and tokens. Follow this model's request example: some models use params.referenceMediaItems, while others use different fields.

Reference rule

Reference images: Upload up to 10 JPEG, PNG, or WebP images, no more than 30 MB each.

Max files

Accepted file kinds

image

Duration token

When duration verification is required, use duration_token from /api/v1/files as durationToken in the request. Keep any additional signed metadata this model requires.

kind	Max size	MIME types
image	30 MB	image/jpeg, image/png, image/webp

Minimal request

{
  "model": "nano-banana-2-lite",
  "prompt": "A product bottle on a light gray background, lit softly from the left.",
  "params": {
    "aspect_ratio": "auto"
  }
}

Reference-file request

{
  "model": "nano-banana-2-lite",
  "prompt": "A product bottle on a light gray background, lit softly from the left.",
  "params": {
    "aspect_ratio": "auto",
    "referenceMediaItems": [
      {
        "url": "https://cdn.example.com/reference-image.png",
        "kind": "image",
        "name": "reference-image.png",
        "mimeType": "image/png",
        "width": 1024,
        "height": 1024,
        "sizeBytes": 1048576,
        "imageDimensionsToken": "image_dimensions_token_from_original_files_api_upload_response"
      }
    ]
  }
}

Example response

An accepted generation request returns a task ID. Poll the status endpoint until the task succeeds or fails. A status request failure does not mean generation failed.

{
  "id": "task_nano_banana_2_lite_example",
  "status": "queued",
  "model": "nano-banana-2-lite",
  "reserved_credits": 3,
  "final_credits": 0,
  "settlement_status": "RESERVED",
  "created_at": "2026-05-11T00:00:00.000Z",
  "updated_at": "2026-05-11T00:00:00.000Z",
  "result": null,
  "error": null
}

Common errors

validation_failed, insufficient_credits, idempotency_conflict, rate_limited, not_found

Some modes require Files API reference uploads.

Nano Banana 2 Lite API reference