Image

Nano Banana Pro API

Nano Banana Pro API gives you Google's Gemini 3 Pro Image on APIMart for 1K, 2K and 4K image generation and editing, with legible multilingual text, up to 14 reference images and consistency for up to 5 people. Pay-as-you-go billing and membership discounts are available.

Image GenerationImage Editing4K OutputCommercial use

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Service Highlights

Official Discounts
Pay-as-you-go
Fast & Low Latency

Input

Model

Prompt

161 characters

Resolution

Size

Number of Images

Content Moderation

Official Channel Fallback

Reference Image

Output

Image link valid for 72 hours

Nano Banana Pro API Pricing

Transparent pricing with no hidden fees. Pay only for what you use.

Variant	Tier	GoldCurrent price	Platinum	Diamond	Official	Your savings
`nano-banana-pro-ext`	1K	0.2Credits(~$0.02)/pic	0.19Credits(~$0.019)/pic	0.18Credits(~$0.018)/pic	0.375Credits(~$0.0375)/pic	46.6%
	2K	0.2Credits(~$0.02)/pic	0.19Credits(~$0.019)/pic	0.18Credits(~$0.018)/pic	0.375Credits(~$0.0375)/pic	46.6%
	4K	0.3Credits(~$0.03)/pic	0.285Credits(~$0.0285)/pic	0.27Credits(~$0.027)/pic	0.5Credits(~$0.05)/pic	40%
`nano-banana-pro` Prices are estimates; actual cost is billed by token usage.	1K	1.072Credits(~$0.1072)/pic	1.0184Credits(~$0.1018)/pic	0.9648Credits(~$0.0965)/pic	1.34Credits(~$0.134)/pic	20%
	2K	1.072Credits(~$0.1072)/pic	1.0184Credits(~$0.1018)/pic	0.9648Credits(~$0.0965)/pic	1.34Credits(~$0.134)/pic	20%
	4K	1.92Credits(~$0.192)/pic	1.824Credits(~$0.1824)/pic	1.728Credits(~$0.1728)/pic	2.4Credits(~$0.24)/pic	20%

* Actual costs are subject to final output.

Google Nano Banana Pro API (Gemini 3 Pro Image) on APIMart

Google built Nano Banana Pro for studio-quality images and precise control. Render legible text in multiple languages, blend up to 14 reference images, keep up to 5 people consistent and adjust camera, lighting and color, at 1K, 2K or 4K. Affordable pay-as-you-go billing with up to 28% off for members.

Get API Key

50K+

Active Users

99.9%

Uptime

Faster

70%

Cost Savings

Key Features of the Nano Banana Pro API

What Nano Banana Pro (Gemini 3 Pro Image) can do through one APIMart endpoint

Nano Banana Pro Text to Image API

Describe the image in a prompt and Nano Banana Pro returns a generated image from the same POST /v1/images/generations endpoint used for editing.

Image to Image with the Gemini 3 Pro Image API

Add image_urls and Nano Banana Pro edits or blends up to 14 reference images. Public URLs and base64 data URIs are accepted in JPEG, PNG or WebP, up to 30 MB each.

1K, 2K and 4K Output from the Nano Banana Pro Model

Choose resolution 1K, 2K or 4K per request. Nano Banana Pro 4K suits print, key art and large displays; 4K responses in base64 take longer to process.

Legible Multilingual Text with Google Nano Banana Pro

Nano Banana Pro renders legible text from short taglines to long paragraphs, in multiple languages, and can translate text on menus or signs while keeping the original layout.

Consistency for up to 5 People in the Gemini Nano Banana Pro API

Google says Nano Banana Pro keeps the resemblance of up to 5 people consistent across a scene, which helps with campaigns, storyboards and group shots.

Camera, Lighting and Color Control in the NanoBanana Pro API

Adjust camera angle, focus and color grading, or transform scene lighting, for example switching day to night or adding a bokeh effect, directly in the Nano Banana Pro prompt.

10 Aspect Ratios plus Auto in the Nano-Banana-Pro API

Set size to 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9 or 21:9, or use auto. For Nano Banana Pro image editing, set the ratio explicitly.

Official and Ext Channels for the Nano Banana Pro API

Call gemini-3-pro-image-preview (Ext, alias nano-banana-pro-ext) or gemini-3-pro-image-preview-official (alias nano-banana-pro). On Ext, official_fallback can route a Nano Banana Pro request to the official channel.

What You Can Build with the Nano Banana Pro AI Image Generator

Real-world Nano Banana Pro applications on APIMart

Polished Ad Visuals from 14 Inputs with Nano Banana Pro

Blend product shots, logos and scene references into one finished ad, then export at 2K or 4K for campaigns and print with Nano Banana Pro.

Localized Menus and Signs with the Nano Banana Pro API

Translate the text on menus, packaging and signs into another language while Nano Banana Pro keeps the original layout and style.

Infographics and Diagrams with Gemini 3 Pro Image

Turn notes and data into infographics, diagrams and explainers with legible labels and clear structure using Nano Banana Pro.

Architecture & Real Estate Visualization

Generate 4K architectural renderings and interiors with Nano Banana Pro, and change camera angle or lighting to present the same space from different views.

Storyboards with Consistent Characters

Nano Banana Pro keeps up to 5 characters recognizable from frame to frame for pre-visualization, pitch decks and animatics.

Brand Identity Assets

Create on-brand key visuals, packaging mockups and social assets with Nano Banana Pro's accurate typography and consistent products across a campaign.

How to Get a Nano Banana Pro API Key and Start Building

Follow these simple steps to set up your account, add funds, and start generating images

Sign Up & Add Funds

Create your free APIMart account and top up your balance. Your balance works across every model on APIMart, including Nano Banana Pro.

→

Get Your Nano Banana Pro API Key

Create an API key in the dashboard to authenticate every Nano Banana Pro API request.

→

Make Your First Nano Banana Pro API Call

Use your API key with the sample code below to send your first Nano Banana Pro request and get an image back.

Get API Key

Nano Banana Pro API Example: Text to Image and Image to Image

Call Google Nano Banana Pro on APIMart with one POST request. Nano Banana Pro generation is asynchronous: submit a task, then poll the task endpoint to get the image URL.

1
Authenticate Nano Banana Pro API requests
Save the key you created above in the APIMART_API_KEY environment variable and send it as Authorization: Bearer <key> on every request.
2
Submit a Nano Banana Pro task
POST /v1/images/generations with the Nano Banana Pro model, your prompt, size and resolution. Add image_urls to edit images. The response returns a task_id.
3
Get the Nano Banana Pro result
Send GET /v1/tasks/{task_id} until the Nano Banana Pro task is completed, then read the image URL from data.result.images[0].url[0]. Image URLs are valid for 24 hours, so download the files you want to keep. A failed task returns the reason in error.message.
See the Nano Banana Pro API documentation for every parameter and response field.

POST /v1/images/generations

curl -X POST https://api.apimart.ai/v1/images/generations \
  -H "Authorization: Bearer $APIMART_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3-pro-image-preview",
    "prompt": "A bilingual cafe menu board in English and French on a chalkboard wall, clean hand-lettered typography, warm morning light",
    "n": 1,
    "size": "16:9",
    "resolution": "2K"
  }'

import os
import time
import requests

API_BASE = "https://api.apimart.ai"
headers = {"Authorization": f"Bearer {os.environ['APIMART_API_KEY']}"}

# 1. Submit the generation task
payload = {
  "model": "gemini-3-pro-image-preview",
  "prompt": "A bilingual cafe menu board in English and French on a chalkboard wall, clean hand-lettered typography, warm morning light",
  "n": 1,
  "size": "16:9",
  "resolution": "2K"
}
resp = requests.post(f"{API_BASE}/v1/images/generations", headers=headers, json=payload, timeout=60)
resp.raise_for_status()
task_id = resp.json()["data"][0]["task_id"]

# 2. Poll the task until it finishes
for _ in range(200):
    task_resp = requests.get(f"{API_BASE}/v1/tasks/{task_id}", headers=headers, timeout=30)
    task_resp.raise_for_status()
    task = task_resp.json()["data"]
    if task["status"] == "completed":
        print(task["result"]["images"][0]["url"][0])
        break
    if task["status"] == "failed":
        raise RuntimeError(task.get("error", {}).get("message", "generation failed"))
    time.sleep(3)
else:
    raise TimeoutError(f"task {task_id} did not finish in time")

curl -X POST https://api.apimart.ai/v1/images/generations \
  -H "Authorization: Bearer $APIMART_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "gemini-3-pro-image-preview",
    "prompt": "Place the product from this photo on a marble kitchen counter in soft morning light and keep the label unchanged",
    "n": 1,
    "size": "1:1",
    "resolution": "2K",
    "image_urls": [
      "https://example.com/product.jpg"
    ]
  }'

TASK_ID="task_xxx"  # replace with the task_id returned by the POST request
curl "https://api.apimart.ai/v1/tasks/$TASK_ID" \
  -H "Authorization: Bearer $APIMART_API_KEY"

Nano Banana Pro API Parameters

Parameter	Type	Required	Default	Description
`model`	string	Required	Default: gemini-3-pro-image-preview	gemini-3-pro-image-preview (Ext, alias nano-banana-pro-ext) or gemini-3-pro-image-preview-official (official, alias nano-banana-pro).
`prompt`	string	Required	Default: —	Text description of the image or the edit.
`size`	string	Optional	Default: —	auto, 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9 or 21:9. For text to image, auto resolves to 1:1 or 16:9; for image editing, set it explicitly.
`resolution`	string	Optional	Default: 1K	Output resolution: 1K, 2K or 4K. 4K responses in base64 take longer to process.
`n`	integer	Optional	Default: 1	Number of images per request. Only 1 is supported; send it as a number, not a string.
`image_urls`	array	Optional	Default: —	Up to 14 reference images as public http(s) URLs or full data URIs. JPEG, PNG or WebP, max 30 MB each. Adding them switches to image editing.
`nsfw_check`	boolean	Optional	Default: false	Moderate the prompt and input images with omni-moderation-latest before submission. Adds cost and latency.
`official_fallback`	boolean	Optional	Default: false	Use the official channel as a fallback. Cannot be set when model is the -official version.

Nano Banana Pro User Reviews

What industry professionals say about Nano Banana Pro

“The 4K native output is mind-blowing! Nano Banana Pro renders our architectural visualizations at full resolution, and adjusting camera angle and lighting right in the prompt saves us a lot of re-renders.”

Sarah Chen

Architecture Firm Director

“Blending up to 14 reference images in one request is a game changer. Nano Banana Pro keeps our products and people consistent, which saves hours of manual compositing on the assets we produce every day.”

James Rodriguez

Creative Technology Lead

“We mock up app screens and marketing visuals with Nano Banana Pro, and the text in the UI actually comes out legible. It has noticeably sped up our design reviews.”

Alex Thompson

Mobile App Product Manager

“From DALL-E to Nano Banana Pro - the quality difference is night and day. Control over lighting and color grading helps every image meet our luxury brand standards.”

Emily Watson

Luxury Brand Marketing Director

“Hollywood-grade storyboarding at AI speed. Nano Banana Pro's character consistency and 4K output make it perfect for pre-visualization.”

David Kim

Film Production Creative Director

“Enhanced text rendering in 4K resolution is perfect for our brand guidelines, and translating packaging text while keeping the layout makes localizing assets much easier.”

Lisa Martinez

Enterprise Brand Designer

Nano Banana API Model Family

Compare every Nano Banana model on APIMart. One API key calls all of them, billed per image.

Model	Base model	Best for	Resolution
Nano Banana API	Gemini 2.5 Flash Image	Character consistency, multi-image blending and prompt-based edits	1K
Nano Banana Pro APIThis page	Gemini 3 Pro Image	Professional 4K images, legible multilingual text and consistency for up to 5 people	1K / 2K / 4K
Nano Banana 2 API	Gemini 3.1 Flash Image	Fast, cost-efficient generation from 0.5K to 4K	0.5K – 4K
Nano Banana 2 Lite API	Gemini 3.1 Flash Lite Image	Fast 1K images and editing, one image per request with up to 14 reference images	1K
Gemini Nano Banana 2.1 API	Gemini Nano Banana 2.1	Latest version: text-to-image and reference-image editing in 14 aspect ratios	1K / 2K / 4K

Nano Banana Pro API FAQ

Everything you need to know about Nano Banana Pro on APIMart

What is Nano Banana Pro (Gemini 3 Pro Image)?

Nano Banana Pro is Google's Gemini 3 Pro Image, an image generation and editing model built for studio-quality results and precise control. It supports 1K, 2K and 4K output, legible multilingual text, up to 14 reference images and consistency for up to 5 people. On APIMart you call it as the Nano Banana Pro API with one API key and pay-as-you-go billing.

When was Nano Banana Pro released?

Google released Nano Banana Pro (Gemini 3 Pro Image) in preview on November 20, 2025 as the next iteration of the Nano Banana model, and made it generally available on May 28, 2026.

What parameters does the Nano Banana Pro API support?

Nano Banana Pro API requests need model and prompt. Optional parameters are size (auto or 10 aspect ratios), resolution (1K, 2K or 4K; default 1K), n (1 image per request), image_urls (up to 14 reference images), nsfw_check and official_fallback. The parameter table on this page lists types and defaults.

What resolutions and aspect ratios does Nano Banana Pro support?

Nano Banana Pro outputs 1K, 2K or 4K images. Supported sizes are auto, 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9 and 21:9. For text to image, auto resolves to 1:1 or 16:9; for edits, set the ratio explicitly.

Can the Nano Banana Pro Edit API do image to image?

Yes. Add image_urls to the same POST /v1/images/generations request and describe the edit in the prompt, and Nano Banana Pro edits or blends your images. You can send up to 14 images as public URLs or base64 data URIs, in JPEG, PNG or WebP up to 30 MB each.

How does Nano Banana Pro handle text and multiple languages?

Nano Banana Pro renders legible text directly in the image, from a short tagline to a long paragraph, in multiple languages. It can also translate the text on items such as menus or signs while keeping the original layout.

How many people and reference images can Nano Banana Pro keep consistent?

Google says Nano Banana Pro keeps the resemblance of up to 5 people consistent and can blend up to 14 reference images into one result. On APIMart you pass the references in image_urls.

When should I use Nano Banana Pro for final 4K assets?

Use Nano Banana Pro for final assets where text accuracy, fidelity and fine control matter most. For fast, high-volume work, Nano Banana 2 (Gemini 3.1 Flash Image) adds a 0.5K tier, extreme aspect ratios (1:4, 4:1, 1:8, 8:1) and Google Search grounding. Compare every model in the family table on this page.

Nano Banana Pro vs Nano Banana: what's the difference?

The original Nano Banana runs on Gemini 2.5 Flash Image with 1K output and focuses on character consistency and multi-image blending. Nano Banana Pro moves to Gemini 3 Pro Image, adding 2K and 4K output, legible multilingual text and camera, lighting and color control. One APIMart key calls both.

What is the difference between the official and Ext Nano Banana Pro API?

Both channels run Nano Banana Pro (Gemini 3 Pro Image) with the same parameters. The Ext channel is gemini-3-pro-image-preview (alias nano-banana-pro-ext) and the official channel is gemini-3-pro-image-preview-official (alias nano-banana-pro). On Ext you can set official_fallback to use the official channel as a fallback; it cannot be set on the official model. The two are priced separately in the table above. The official route is billed by actual input and output token usage; Ext is billed per successfully generated image.

Nano Banana Pro pricing: how much does the API cost per image?

The Nano Banana Pro price depends on the route: the official route is settled on actual input and output token usage, while Ext is billed per successfully generated image at the rate for the selected specification. An estimated price per image for the official route is not a fixed final charge. Check this page's live pricing table for current rates and the completed task's cost for the final amount. Gold members save 20%; Platinum and Diamond members save up to 28%.

Is the Nano Banana Pro API free?

No. The Nano Banana Pro API has no free quota on APIMart. It is pay-as-you-go, with billing determined by the selected route, and you only pay for successful requests. Gold members save 20%; Platinum and Diamond members save up to 28%.

How do I get a Nano Banana Pro API key?

Sign up for APIMart, open the API Keys page in your dashboard and create a key. The same key calls the Google Nano Banana Pro API and every other model on the platform, with pay-as-you-go billing and no subscription.

How do I use the Nano Banana Pro API, and where are the docs?

Send POST https://api.apimart.ai/v1/images/generations with your API key, model gemini-3-pro-image-preview and your prompt. The response returns a task_id: poll GET /v1/tasks/{task_id} until status is completed, then read the image URL from the result. Copy-ready cURL and Python examples are on this page, and the Nano Banana Pro API docs at docs.apimart.ai list every parameter and response field.

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Nano Banana Pro API FAQ

Everything you need to know about Nano Banana Pro on APIMart

What is Nano Banana Pro (Gemini 3 Pro Image)?

When was Nano Banana Pro released?

Google released Nano Banana Pro (Gemini 3 Pro Image) in preview on November 20, 2025 as the next iteration of the Nano Banana model, and made it generally available on May 28, 2026.

What parameters does the Nano Banana Pro API support?

What resolutions and aspect ratios does Nano Banana Pro support?

Can the Nano Banana Pro Edit API do image to image?

How does Nano Banana Pro handle text and multiple languages?

How many people and reference images can Nano Banana Pro keep consistent?

Google says Nano Banana Pro keeps the resemblance of up to 5 people consistent and can blend up to 14 reference images into one result. On APIMart you pass the references in image_urls.

Nano Banana Pro API

Nano Banana Pro API Pricing

Google Nano Banana Pro API (Gemini 3 Pro Image) on APIMart

Key Features of the Nano Banana Pro API

What You Can Build with the Nano Banana Pro AI Image Generator

How to Get a Nano Banana Pro API Key and Start Building

Sign Up & Add Funds

Get Your Nano Banana Pro API Key

Make Your First Nano Banana Pro API Call

Nano Banana Pro API Example: Text to Image and Image to Image

Authenticate Nano Banana Pro API requests

Submit a Nano Banana Pro task

Get the Nano Banana Pro result

Nano Banana Pro API Parameters

Nano Banana Pro User Reviews

Nano Banana API Model Family

Nano Banana Pro API FAQ

What is Nano Banana Pro (Gemini 3 Pro Image)?

When was Nano Banana Pro released?

What parameters does the Nano Banana Pro API support?

What resolutions and aspect ratios does Nano Banana Pro support?

Can the Nano Banana Pro Edit API do image to image?

How does Nano Banana Pro handle text and multiple languages?

How many people and reference images can Nano Banana Pro keep consistent?

When should I use Nano Banana Pro for final 4K assets?

Nano Banana Pro vs Nano Banana: what's the difference?

What is the difference between the official and Ext Nano Banana Pro API?

Nano Banana Pro pricing: how much does the API cost per image?

Is the Nano Banana Pro API free?

How do I get a Nano Banana Pro API key?

How do I use the Nano Banana Pro API, and where are the docs?

Related Models

Latest Nano Banana Pro articles

Key Features of the Nano Banana Pro API

What You Can Build with the Nano Banana Pro AI Image Generator

How to Get a Nano Banana Pro API Key and Start Building

Sign Up & Add Funds

Get Your Nano Banana Pro API Key

Make Your First Nano Banana Pro API Call

Nano Banana Pro User Reviews

Nano Banana Pro API FAQ

What is Nano Banana Pro (Gemini 3 Pro Image)?

When was Nano Banana Pro released?

What parameters does the Nano Banana Pro API support?

What resolutions and aspect ratios does Nano Banana Pro support?

Can the Nano Banana Pro Edit API do image to image?

How does Nano Banana Pro handle text and multiple languages?

How many people and reference images can Nano Banana Pro keep consistent?

When should I use Nano Banana Pro for final 4K assets?

Nano Banana Pro vs Nano Banana: what's the difference?

What is the difference between the official and Ext Nano Banana Pro API?

Nano Banana Pro pricing: how much does the API cost per image?

Is the Nano Banana Pro API free?

How do I get a Nano Banana Pro API key?

How do I use the Nano Banana Pro API, and where are the docs?

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