Nano Banana 2 API (Gemini 3.1 Flash Image)

Availability and pricing

Published contract · ready

$0.018 per image

Prices shown use the public default price group. Your account price and the request quote determine the amount reserved and charged.

Published verification: 2026-10-05T20:53:28.214Z

Pricing revision: rev_77d43bdb-40af-4037-b1c9-ad4a29d977a4

Supported inputs and limits

tasks

max References

0

expected Outputs

1

units

[1]

resolutions

["1K"]

aspects

["1:1"]

delivery Spec

{"width":1024,"aspect":"1:1","height":1024,"quality":"standard"}

edit

Not enabled

video References

Not enabled

extension

Not enabled

audio Control

Not enabled

silent Output Verified

Not enabled

{
  "kind": "image",
  "modes": [
    "generate"
  ],
  "qualities": [
    "standard"
  ],
  "units": [
    1
  ],
  "aspects": [
    "1:1"
  ],
  "resolutions": [
    "1K"
  ],
  "maxReferences": 0,
  "expectedOutputs": 1,
  "deliverySpec": {
    "width": 1024,
    "aspect": "1:1",
    "height": 1024,
    "quality": "standard"
  }
}

Limitations

• Draft only until live verification and actual cost reconciliation pass. Single text-to-image draft; exact archived dimensions still require live confirmation.

API request example

Use your own API key. This is a request body; asynchronous tasks also require checking their status and output.

POST /v1/tasks
{
  "model": "google/gemini-3.1-flash-image-preview",
  "prompt": "A quiet orbit",
  "mode": "generate",
  "units": 1,
  "quality": "standard",
  "maxCost": 1000000,
  "idempotencyKey": "replace-with-a-new-business-key"
}

Is Nano Banana Pro the same request?

These are distinct model variants. Use this page’s exact Gemini 3.1 Flash Image identifier and its configured settings rather than parameters copied from another variant.

Try this model

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