Google: Nano Banana 2 Lite (Gemini 3.1 Flash-Lite Image) · fastrouter

Gemini 3.1 Flash-Lite Image is a cost-efficient multimodal Gemini 3.1 variant optimized for high-volume image workflows, supporting text and image inputs with both image and text outputs. It is suitable for image generation, editing, and related multimodal tasks where low latency and price are important. The model is available via the Gemini API in Google AI Studio and for enterprises via Vertex AI.

Base model All models on this base All models of the provider to the provider

Input, $/1M $0.25

Output, $/1M $1.50

Context 65 536

Max output 4 096

Accepts images, text

Last checked 04.11.2026 12:00:14 UTC

Source provider's page

Price alerts

API

OpenAI-compatible API: the official OpenAI SDKs work with this base URL. Replace YOUR_API_KEY with your key from the provider.

API base URL	`https://go.fastrouter.ai/api/v1`
Endpoint	`https://go.fastrouter.ai/api/v1/images/generations`
Model id	`google/gemini-3.1-flash-lite-image`

curl

curl https://go.fastrouter.ai/api/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "google/gemini-3.1-flash-lite-image", "prompt": "a lighthouse at sunset", "n": 1, "size": "1024x1024"}'

Python

import requests

r = requests.post(
    "https://go.fastrouter.ai/api/v1/images/generations",
    headers={"Authorization": "Bearer YOUR_API_KEY"},
    json={
      "model": "google/gemini-3.1-flash-lite-image",
      "prompt": "a lighthouse at sunset",
      "n": 1,
      "size": "1024x1024"
    },
)
print(r.json())

JavaScript

const r = await fetch("https://go.fastrouter.ai/api/v1/images/generations", {
  method: "POST",
  headers: {Authorization: "Bearer YOUR_API_KEY", "Content-Type": "application/json"},
  body: JSON.stringify({
    "model": "google/gemini-3.1-flash-lite-image",
    "prompt": "a lighthouse at sunset",
    "n": 1,
    "size": "1024x1024"
  }),
});
console.log(await r.json());

Request (JSON)

{
  "model": "google/gemini-3.1-flash-lite-image",
  "prompt": "a lighthouse at sunset",
  "n": 1,
  "size": "1024x1024"
}

Response (JSON)

{
  "created": 1760000000,
  "data": [
    {
      "url": "https://...",
      "b64_json": null
    }
  ]
}

The address is taken from the provider's model list; check it against the provider's documentation.

Provider's API documentation

Source: AI Rate Card, https://airatecard.com/en/c/offer%3Afastrouter%7Cgoogle/gemini-3.1-flash-lite-image, prices checked 2026-11-04; seller's page: https://fastrouter.ai/models/google/gemini-3.1-flash-lite-image

Technical details

ID: offer:fastrouter|google/gemini-3.1-flash-lite-image