Gemini 3 Pro Image Preview

by Google

Released 156 days after Gemini 2.5 Flash Lite · Announcement · All Google releases

Gemini 3 Pro Image Preview, also known as Nano Banana Pro, combines Google's advanced reasoning with professional-grade image generation and editing. It is built for complex, multi-turn image creation that needs accurate text rendering, real-world grounding through Google Search, and high-fidelity detail, making it a fit for graphic design, product mockups, and data visualizations. With a 66K context window and up to 33K output tokens, the model is built to understand intricate visual briefs and refine images iteratively through conversational guidance. It offers studio-quality precision and detailed editing control, including consistent multi-image blending and identity preservation across multiple subjects. It best fits professional workflows where image generation demands reasoning-driven accuracy alongside creative sophistication.

Call Gemini 3 Pro Image Preview on Opper with the OpenAI SDK. Sign up without a credit card. Get started

Key info

Input
Output
Features
Context window
1M
Max output
66K
Input price
$2.00 /1M
Output price
$12.00 /1M
Released
  • US residency available
  • Zero data retention with abuse monitoring
  • No training by default
  • GDPR DPA available

Available routes

Gemini 3 Pro Image Preview runs on 2 different routes through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.

ProviderRegionZero data retentionTrainingInputOutputCache read
USNo$2.00$12.00Input price
MultiNo$2.00$12.00Input price

Uptime and availability

Gemini 3 Pro Image Preview runs on a single route through the Opper gateway today, so its availability is that provider's availability.

99.40%route uptime, last 30 days
Single route, no failover target within this model.

Name a second model in the same request and the gateway tries it on retriable errors, so a busy hour never has to reach your users. Set up a fallback chain.

Measured over the last 30 days from each provider's official status feed via StatusGator. Refreshed hourly. See uptime for every provider Opper monitors.

Data handling per route

Each route hosting Gemini 3 Pro Image Preview has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.

Google Cloud — United States🇺🇸

Zero data retention with abuse monitoring: prompts and outputs are kept for abuse monitoring only, for a window the provider does not state, and are not used for training. No training on customer data. US; SCCs; DPA available.

Zero data retention
With abuse monitoring, window not stated.
Training
No training on customer data.
Logging
Abuse monitoring
Abuse monitoring
On by default, holds flagged content, 55 days, a person can view samples
GDPR DPA
DPA available
Transfer mechanism
SCCs

Google Cloud — Multi-region

Zero data retention with abuse monitoring: prompts and outputs are kept for abuse monitoring only, for a window the provider does not state, and are not used for training. No training on customer data. GLOBAL; SCCs; DPA available.

Zero data retention
With abuse monitoring, window not stated.
Training
No training on customer data.
Logging
Abuse monitoring
Abuse monitoring
On by default, holds flagged content, 90 days, a person can view samples
GDPR DPA
DPA available
Transfer mechanism
SCCs

Get started

Call Gemini 3 Pro Image Preview through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.

Gemini 3 Pro Image Preview is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.

Set it up with your agent

Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.

Or call it directly

import OpenAI from "openai";
const client = new OpenAI({
apiKey: process.env.OPPER_API_KEY,
baseURL: "https://api.opper.ai/v3/compat",
});
const completion = await client.chat.completions.create({
model: "gemini-3-pro-image-preview",
messages: [{ role: "user", content: "Hello" }],
});
console.log(completion.choices[0].message.content);

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