Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview): AI model
Gemini 3.1 Flash Image Preview is a Google image generation and editing model that turns prompts and reference images into new visuals. Served asynchronously through Hormouz.
- Context window:
- 65,536 tokens
- Input:
- $0.5/1M tokens
- Output:
- $3/1M tokens
- Type:
- text, image
- Vision
- Streaming
Thinking levels: high · minimal
Gemini 3.1 Flash Image Preview is a Google image generation and editing model. It produces new images from text prompts and can edit or combine reference images while keeping the requested composition, subjects and style. It accepts images and text as input and returns generated images.
Image requests run asynchronously: you submit a prediction and then poll for the result, which fits longer-running generation and batch workloads. Typical uses include product visuals, marketing creative, illustration, and iterative edit-and-refine workflows.
Pricing is usage-based at $0.5/M in · $3/M out · $60/M image-output tokens. Gemini 3.1 Flash Image Preview is served through Hormouz behind an asynchronous predictions API, with stable access from inside Iran.
Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines...
Quickstart
# The image comes back as a data: URI on message.images, not as text.
URL=$(curl -s https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "google/gemini-3.1-flash-image-preview",
"modalities": ["image", "text"],
"messages": [{"role": "user", "content": "A red apple on a wooden table"}]
}' | jq -r '.choices[0].message.images[0].image_url.url')
# Take the extension from the URI itself — this model may answer png or jpeg.
EXT=$(printf '%s' "$URL" | sed -n 's|^data:image/\([a-z]*\);.*|\1|p')
printf '%s' "$URL" | sed 's/^data:[^,]*,//' | base64 -d > "output.${EXT:-png}"Specs
| Vendor | |
|---|---|
| Type | Text, Image |
| Context window | 65,536 tokens |
| Pricing | $0.50/M in · $3.00/M out |
| API | Chat Completions |
| Capabilities | Streaming · Vision |
Design Arena
How Design Arena works ↗Metrics sourced from Design Arena
Code example
# The image comes back as a data: URI on message.images, not as text.
URL=$(curl -s https://api.hormouz.net/v1/chat/completions \
-H "Authorization: Bearer ng-YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "google/gemini-3.1-flash-image-preview",
"modalities": ["image", "text"],
"messages": [{"role": "user", "content": "A red apple on a wooden table"}]
}' | jq -r '.choices[0].message.images[0].image_url.url')
# Take the extension from the URI itself — this model may answer png or jpeg.
EXT=$(printf '%s' "$URL" | sed -n 's|^data:image/\([a-z]*\);.*|\1|p')
printf '%s' "$URL" | sed 's/^data:[^,]*,//' | base64 -d > "output.${EXT:-png}"import base64
from openai import OpenAI
client = OpenAI(api_key="ng-YOUR_API_KEY", base_url="https://api.hormouz.net/v1")
response = client.chat.completions.create(
model="google/gemini-3.1-flash-image-preview",
messages=[{"role": "user", "content": "A red apple on a wooden table"}],
modalities=["image", "text"],
)
# message.content is None on an image reply — the picture is in message.images.
for i, img in enumerate(response.choices[0].message.images or []):
header, b64 = img["image_url"]["url"].split(",", 1)
ext = "png" if "image/png" in header else "jpg"
with open(f"output_{i}.{ext}", "wb") as f:
f.write(base64.b64decode(b64))import OpenAI from "openai";
import fs from "node:fs";
const client = new OpenAI({ apiKey: "ng-YOUR_API_KEY", baseURL: "https://api.hormouz.net/v1" });
const response = await client.chat.completions.create({
model: "google/gemini-3.1-flash-image-preview",
messages: [{ role: "user", content: "A red apple on a wooden table" }],
modalities: ["image", "text"],
});
// message.content is null on an image reply — the picture is in message.images.
(response.choices[0].message.images ?? []).forEach((img, i) => {
const url = img.image_url.url;
const ext = url.startsWith("data:image/png") ? "png" : "jpg";
fs.writeFileSync(`output_${i}.${ext}`, Buffer.from(url.slice(url.indexOf(",") + 1), "base64"));
});Buy the Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) API, paid in rial
- Buy credit with an Iranian bank card; no foreign card or account needed.
- One Hormouz key reaches Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview) and 600+ other models, and you pay only for what you use.
- No VPN and no risk of a banned account; just change the base URL to api.hormouz.net/v1.
Use via Hormouz
Connect to this model and 600+ others with one API key, then see usage down to each request.
Request company accessFAQ
- What does Gemini 3.1 Flash Image Preview produce?
- It generates and edits images from images and text. Requests run asynchronously via the predictions API. Submit, then poll for the result.
- What is the context window of Gemini 3.1 Flash Image Preview?
- Up to 131K tokens, suitable for long documents and multi-turn conversations.
- How much does Gemini 3.1 Flash Image Preview cost?
- Usage-based pricing: $0.5/M in · $3/M out · $60/M image-output tokens.
- What is Gemini 3.1 Flash Image Preview good for?
- Product visuals, marketing creative, illustration, and iterative image edits where you refine a result across turns.
- How do I access Gemini 3.1 Flash Image Preview from inside Iran?
- Create an account on Hormouz and generate an API key. Hormouz provides stable access from inside Iran via an asynchronous predictions API.
Updated 2026-10-13