Nano Banana 2 (Gemini 3.1 Flash Image)

proprietary

Max size

Input → output

text → image

Weights

Proprietary

Providers

1 provider · price, latency and uptime

ProviderPer imageLatency p50Uptime · hourly, 24hRetention

Google

≤ $0.20–

–

may retain

Listed price: $60 / M image tokens
Most per image: $0.20
Precision: –
Regions: default
Headquarters: –
Data retention: May retain prompts

Uptime · last 3 days10-05 04:00 – 10-08 03:33 UTC

MonTueWedNow

By default the router tries our listings in routing order and fails over before the first byte — never mid-answer. Uptime is our own measurement; an hour stays grey until it has a sample. Open the row for the provider's specs and policies.

Quickstart

any SDK — only the base URL changes

curl https://api.routerplus.com/v1/images/generations \
  -H "Authorization: Bearer $TM_API_KEY" -H "content-type: application/json" \
  -d '{"model":"gemini-3.1-flash-image","prompt":"a red dot","aspect_ratio":"1:1"}'

# OpenAI SDK — only the base URL changes
import base64, os
from openai import OpenAI
client = OpenAI(base_url="https://api.routerplus.com/v1", api_key=os.environ["TM_API_KEY"])
r = client.images.generate(model="gemini-3.1-flash-image", prompt="a red dot",
  extra_body={"aspect_ratio": "1:1"})
png = base64.b64decode(r.data[0].b64_json)

import OpenAI from "openai";

const client = new OpenAI({ baseURL: "https://api.routerplus.com/v1", apiKey: process.env.TM_API_KEY });
const r = await client.images.generate({ model: "gemini-3.1-flash-image", prompt: "a red dot", aspect_ratio: "1:1" });
const png = Buffer.from(r.data[0].b64_json, "base64");

.qs pre[hidden] { display: block; border-top: 1px solid var(--code-line); } .qsb { display: none; } .qcode::before { content: attr(data-lang); display: block; color: var(--code-muted); font-size: 11px; margin-bottom: 6px; }

Pricing

billed at the cost the provider reports · at most $0.20 per image

output image	$60 / M image tokens
input	$0.5 / M input tokens

Every billed response carries usage.cost — recompute your bill from the wire.

Parameters

n — integer 1–1 (default 1)

aspect_ratio — 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 (default 1:1)

resolution — 512 · 1K · 2K · 4K (default 1K)

Values outside these are refused with a 400 that names the field.

Uptime

10-05 04:00 – 10-08 03:33 UTC

Last 3 days–last 24h · TTFB p50 – · uptime n<100

MonTueWedNow

An hour counts at the best provider's uptime: a request goes to another provider when one fails. Grey hours have no sample yet.