Image

Nano Banana API

Nano Banana API gives you Google's Gemini 2.5 Flash Image on APIMart for text-to-image generation and image editing, with character consistency and up to 14 reference images per request. Pay-as-you-go billing and membership discounts are available.

Image GenerationImage EditingCommercial use

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Service Highlights

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

Input

Model

Prompt

109 characters

Size

Number of Images

Content Moderation

Reference Image

Output

Image link valid for 72 hours

Nano Banana API Pricing

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

Variant	GoldCurrent price	Platinum	Diamond	Official	Your savings
`nano-banana` Prices are estimates; actual cost is billed by token usage.	0.312Credits(~$0.0312)/pic	0.2964Credits(~$0.0296)/pic	0.2808Credits(~$0.0281)/pic	0.39Credits(~$0.039)/pic	20%

* Actual costs are subject to final output.

Google Nano Banana API (Gemini 2.5 Flash Image) on APIMart

Generate and edit images with Google's Gemini 2.5 Flash Image, better known as Nano Banana. With Nano Banana you can keep characters consistent, fuse up to 14 reference images and make targeted edits with plain-language prompts. Affordable pay-as-you-go billing: up to 28% off for members, and you only pay for successful requests.

Get API Key

50K+

Active Users

99.9%

Uptime

Faster

70%

Cost Savings

Key Features of the Nano Banana API

What Gemini 2.5 Flash Image can do through one APIMart endpoint

Nano Banana Text to Image API

Describe the image in a prompt of up to 1,000 characters and Nano Banana returns a generated image from the same POST /v1/images/generations endpoint used for editing.

Image to Image with the Gemini 2.5 Flash Image API

Add image_urls to the request and Nano Banana edits or restyles your existing images. Public URLs and base64 data URIs are both accepted, in JPEG, PNG or WebP up to 10 MB each.

Character Consistency in the Gemini Nano Banana API

Nano Banana keeps the same face, product or character recognizable across new scenes and edits, which makes series content, mascots and product sets far easier to produce.

Multi-Image Blending with Google Nano Banana

Pass up to 14 reference images in one Nano Banana request to place a product in a new scene, merge subjects or transfer a style, guided by a single prompt.

World Knowledge in the Nano Banana AI Model

Gemini's world knowledge helps Nano Banana follow real-world context in prompts, from recognizable objects and settings to diagrams and instructional visuals.

10 Aspect Ratios plus Auto in the NanoBanana 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. Output resolution is 1K, and each request returns one image.

Official and Ext Channels for the Nano-Banana API

Call gemini-2.5-flash-image-preview (Ext, alias nano-banana-ext) or gemini-2.5-flash-image-preview-official (alias nano-banana). On Ext, official_fallback can route a request to the official channel.

Nano Banana API Pricing: Official and Ext

The official route is billed by actual input and output token usage; Ext is billed per successfully generated image. The pricing table on this page lists both routes. Gold members save 20%; Platinum and Diamond members save up to 28%.

What You Can Build with the Nano Banana AI Image Generator

Real-world applications powered by APIMart

E-commerce Product Photos with Nano Banana

Use Nano Banana to create lifestyle photos, virtual try-ons and consistent product mockups. Place jewelry on models or show products from several angles in realistic settings.

Social Media Visuals with the Gemini Nano Banana API

Produce UGC-style images, social campaigns and brand assets with Nano Banana's consistent characters, so recurring personas and branded content stay on model at scale.

Interior Design & Real Estate

Transform room photos with Nano Banana: change furniture colors, add decor or create photorealistic visualizations without expensive photo shoots.

Storyboards and Previs

Filmmakers and animators use Nano Banana to generate scene thumbnails quickly and keep characters consistent from frame to frame across a visual narrative.

Brand & Creative Design

Create on-brand visuals, marketing materials and creative assets with Nano Banana, keeping characters and products consistent. A good fit for agencies and design teams.

Blog and Content Images with the Nano Banana API

Generate unique images for blogs, articles and newsletters with Nano Banana, and keep a consistent visual style across a whole campaign.

How to Get a Nano Banana 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 to begin. You can set up an organization for your team at any time. Top up your account balance to get started. Your balance can be used across all models on the platform, including Nano Banana.

→

Generate Your Nano Banana API Key

In your dashboard, create an API key — you'll need it to authenticate every request.

→

Make Your First Nano Banana API Call

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

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

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

1
Authenticate Nano Banana 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 task
POST /v1/images/generations with model, your prompt and size. Add image_urls to edit images. The response returns a task_id.
3
Get the Nano Banana result
Send GET /v1/tasks/{task_id} until status is completed, then read the image URL from data.result.images[0].url[0]. Image URLs expire at expires_at, so download the files if you need to keep them. A failed task returns the reason in error.message.
See the Nano Banana API reference 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-2.5-flash-image-preview",
    "prompt": "A photorealistic ceramic coffee mug on a wooden desk by a window, soft morning light, shallow depth of field",
    "n": 1,
    "size": "16:9"
  }'

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-2.5-flash-image-preview",
  "prompt": "A photorealistic ceramic coffee mug on a wooden desk by a window, soft morning light, shallow depth of field",
  "n": 1,
  "size": "16:9"
}
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-2.5-flash-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",
    "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 API Parameters

Parameter	Type	Required	Default	Description
`model`	string	Required	Default: gemini-2.5-flash-image-preview	gemini-2.5-flash-image-preview (Ext, alias nano-banana-ext) or gemini-2.5-flash-image-preview-official (official, alias nano-banana).
`prompt`	string	Required	Default: —	Text description of the image or the edit, up to 1,000 characters.
`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. Only 1K is supported.
`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 10 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 the task is submitted.
`official_fallback`	boolean	Optional	Default: false	Use the official channel as a fallback. Cannot be set when model is the -official version.

Nano Banana API User Reviews

What developers and businesses say about Nano Banana on APIMart

“Nano Banana's character consistency is game-changing for our e-commerce platform. We can generate multiple product mockups with the same model and it looks natural every time.”

Sarah Chen

E-Commerce Director

“10-second generation speed is incredible! On APIMart I also get 20% off as a member. This combination of speed and affordability transformed our workflow.”

James Rodriguez

Technical Lead

“APIMart's Nano Banana is fast, and membership pricing saves us 20%. The quality is consistent and Gemini 2.5 Flash Image's character consistency feature is unmatched.”

Alex Thompson

Product Manager

“We switched from DALL-E to Nano Banana for our marketing campaigns. The speed improvement and character consistency made a huge difference in our workflow.”

Emily Watson

Marketing Manager

“Nano Banana's conversational editing feature is incredibly powerful. We can refine images iteratively without losing quality or consistency. Perfect for our design team.”

David Kim

Creative Director

“Gemini 2.5 Flash Image's text rendering quality is excellent compared to other image models. We use Nano Banana for all our brand mockups and social media assets now.”

Lisa Martinez

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 APIThis page	Gemini 2.5 Flash Image	Character consistency, multi-image blending and prompt-based edits	1K
Nano Banana Pro API	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 API FAQ

Common questions about Nano Banana on APIMart

What is Nano Banana (Gemini 2.5 Flash Image)?

Nano Banana is the popular name for Google's Gemini 2.5 Flash Image, an image generation and editing model known for character consistency, multi-image blending and prompt-based edits. On APIMart you call it as the Nano Banana API with model gemini-2.5-flash-image-preview, using one API key and pay-as-you-go billing.

When was Nano Banana released?

Google announced Gemini 2.5 Flash Image, nicknamed nano-banana, on August 26, 2025. Newer models in the family, Nano Banana Pro, Nano Banana 2 and Gemini Nano Banana 2.1, are also available on APIMart; compare them in the model family table on this page.

What parameters does the Nano Banana API support?

Requests need model and prompt (up to 1,000 characters). Optional parameters are size (auto, 1:1, 2:3, 3:2, 3:4, 4:3, 4:5, 5:4, 9:16, 16:9 or 21:9), resolution (1K only), 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.

Nano Banana Edit API: can Nano Banana do image to image editing?

Yes. The Nano Banana Edit API is not a separate endpoint: add image_urls to the same POST /v1/images/generations request and describe the change in the prompt. You can send up to 14 images as public URLs or base64 data URIs, in JPEG, PNG or WebP up to 10 MB each. For edits, set size explicitly, because auto follows the ratio returned upstream.

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

Both run Gemini 2.5 Flash Image with the same parameters. The Ext channel is gemini-2.5-flash-image-preview (alias nano-banana-ext) and the official channel is gemini-2.5-flash-image-preview-official (alias nano-banana). 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.

Where are the Nano Banana API docs?

The full Nano Banana documentation, with every API parameter and response field, is in the APIMart docs at docs.apimart.ai. Copy-ready cURL and Python examples are also on this page in the API example section.

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

The Nano Banana 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 there a discount on the Nano Banana API?

Yes. The pricing table on this page shows the Gold member price, 20% off. Platinum and Diamond members save even more, up to 28%. You only pay for successful requests.

Is the Nano Banana API free?

No. The Nano Banana 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 API key?

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

How do I use the Nano Banana API?

Send POST https://api.apimart.ai/v1/images/generations with your API key, model gemini-2.5-flash-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.

Can I use the Nano Banana API for commercial projects?

Yes. Images can be used commercially for e-commerce, marketing, social media, product photography and professional content creation, which suits agencies, businesses and content creators.

Nano Banana vs Nano Banana Pro vs Nano Banana 2: which API should I use?

Nano Banana (gemini-2.5-flash-image-preview) is the original Gemini 2.5 Flash Image model, strong at character consistency and multi-image blending, with 1K output. Nano Banana Pro runs on Gemini 3 Pro Image and Nano Banana 2 on Gemini 3.1 Flash Image, both with higher-resolution output. One APIMart key calls every model in the family, so you can compare them side by side.

Is this the Gemini Nano Banana API from Google?

Yes. Nano Banana is the popular name for Google's Gemini 2.5 Flash Image, so the Gemini Nano Banana API, the Google NanoBanana API, the Nano Banana AI API and the Nano-Banana API all refer to the same Google Nano Banana model. On APIMart you can call it by its alias: set model to nano-banana (official) or nano-banana-ext, with the same API key as every other model.

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Nano Banana API FAQ

Common questions about Nano Banana on APIMart

What is Nano Banana (Gemini 2.5 Flash Image)?

When was Nano Banana released?

What parameters does the Nano Banana API support?

Nano Banana Edit API: can Nano Banana do image to image editing?

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

Where are the Nano Banana API docs?

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

Is there a discount on the Nano Banana API?

Yes. The pricing table on this page shows the Gold member price, 20% off. Platinum and Diamond members save even more, up to 28%. You only pay for successful requests.

Is the Nano Banana API free?

How do I get a Nano Banana API key?

How do I use the Nano Banana API?

Can I use the Nano Banana API for commercial projects?

Yes. Images can be used commercially for e-commerce, marketing, social media, product photography and professional content creation, which suits agencies, businesses and content creators.

Nano Banana API

Nano Banana API Pricing

Google Nano Banana API (Gemini 2.5 Flash Image) on APIMart

Key Features of the Nano Banana API

What You Can Build with the Nano Banana AI Image Generator

How to Get a Nano Banana API Key and Start Building

Sign Up & Add Funds

Generate Your Nano Banana API Key

Make Your First Nano Banana API Call

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

Authenticate Nano Banana API requests

Submit a Nano Banana task

Get the Nano Banana result

Nano Banana API Parameters

Nano Banana API User Reviews

Nano Banana API Model Family

Nano Banana API FAQ

What is Nano Banana (Gemini 2.5 Flash Image)?

When was Nano Banana released?

What parameters does the Nano Banana API support?

Nano Banana Edit API: can Nano Banana do image to image editing?

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

Where are the Nano Banana API docs?

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

Is there a discount on the Nano Banana API?

Is the Nano Banana API free?

How do I get a Nano Banana API key?

How do I use the Nano Banana API?

Can I use the Nano Banana API for commercial projects?

Nano Banana vs Nano Banana Pro vs Nano Banana 2: which API should I use?

Is this the Gemini Nano Banana API from Google?

Related Models

Latest Nano Banana articles

Key Features of the Nano Banana API

What You Can Build with the Nano Banana AI Image Generator

How to Get a Nano Banana API Key and Start Building

Sign Up & Add Funds

Generate Your Nano Banana API Key

Make Your First Nano Banana API Call

Nano Banana API User Reviews

Nano Banana API FAQ

What is Nano Banana (Gemini 2.5 Flash Image)?

When was Nano Banana released?

What parameters does the Nano Banana API support?

Nano Banana Edit API: can Nano Banana do image to image editing?

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

Where are the Nano Banana API docs?

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

Is there a discount on the Nano Banana API?

Is the Nano Banana API free?

How do I get a Nano Banana API key?

How do I use the Nano Banana API?

Can I use the Nano Banana API for commercial projects?

Nano Banana vs Nano Banana Pro vs Nano Banana 2: which API should I use?

Is this the Gemini Nano Banana API from Google?

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