Nano Banana Production Release: 10 Aspect Ratios, Support for Changing Original Image Proportions

Author's Note: Detailed introduction to Gemini 2.5 Flash Image production model (Nano Banana) core features, including 10 aspect ratio support, original image ratio conversion, Google native API endpoints and other major upgrades.

Nano Banana Production Model(gemini-2.5-flash-image) is officially launched, marking a major upgrade in Google's image generation technology. Compared to the preview version, the production release brings 10 aspect ratio support, original image ratio conversion, reference image generation and other core features, significantly improving flexibility in image generation and editing.

This article will detail Nano Banana production version's core features, comparison with preview version, practical application scenarios, and complete API call examples, helping you quickly master this powerful image generation tool.

The article covers Google native API endpoint usage, 10 aspect ratio configurations, core capability of changing original image ratios, Base64 format processing and other technical points, as well as online testing methods on APIYI platform and AI Image Master.

Core Value: Through this article, you'll learn how to use Nano Banana production version for flexible image generation and editing, master aspect ratio conversion techniques, and improve image processing efficiency and quality.

Nano Banana Production Version Background

On October 2, 2025, Google DeepMind officially released Gemini 2.5 Flash Image Production Version, a major functional upgrade following the preview version. The production model, codenamed "Nano Banana" 🍌, greatly enhances feature richness and production stability while maintaining high cost-effectiveness.

Production vs Preview Core Comparison

Core Breakthrough: The production version's biggest highlight is support for changing original image ratio output, for example, directly outputting a 1:1 square image as a 16:9 landscape image without cropping or stretching—extremely practical in image editing scenarios.

Nano Banana Production Core Features

Here are the core features of Nano Banana Production Version:

🔥 Key Feature Details

Full 10 Aspect Ratio Support

Production version supports 10 mainstream aspect ratios covering various application scenarios:

Landscape Ratios:

• 21:9 – Ultra-wide, suitable for cinematic visuals, banner ads
• 16:9 – Standard widescreen, suitable for video covers, presentations
• 4:3 – Classic landscape, suitable for traditional displays, projectors
• 3:2 – Common photography ratio, suitable for camera photos, print output
• 5:4 – Near-square landscape, suitable for specific design needs

Square Ratio:

• 1:1 – Square, suitable for social media (Instagram), avatars

Portrait Ratios:

• 9:16 – Standard portrait, suitable for mobile screens, short videos
• 3:4 – Classic portrait, suitable for character portraits
• 2:3 – Photography portrait, suitable for professional photography
• 4:5 – Near-square portrait, suitable for Instagram vertical images

Original Ratio Conversion Core Capability

This is the production version's killer feature:

Application Examples:

• Convert 1:1 product image to 16:9 banner ad
• Convert 4:3 photo to 9:16 portrait poster
• Convert 16:9 landscape to 1:1 social media image

Technical Advantages:

• Smart Extension: AI automatically fills new areas, maintains harmony
• Lossless Conversion: No cropping of original content, no stretching
• Semantic Understanding: Understands image subject, rationally arranges new areas

Google Native API Endpoint

Production version adds Google native API endpoint support:

https://api.apiyi.com/v1beta/models/gemini-2.5-flash-image:generateContent

Native API Advantages:

• Complete Features: Supports all official Google parameters and configurations
• Performance Optimization: Directly connects to Google's underlying services
• Format Flexibility: Supports gemini-native API type

Dual Format Support:

• OpenAI Compatible Format: Uses /v1/chat/completions endpoint
• Google Native Format: Uses /v1beta/models/... endpoint

Nano Banana Production Application Scenarios

Nano Banana Production Version excels in the following scenarios:

Nano Banana Production Technical Implementation

💻 Quick Start – Google Native API

Using Google native API endpoint (Python):

import requests
import json
import base64

# Configure APIYI platform - Google native endpoint
url = "https://api.apiyi.com/v1beta/models/gemini-2.5-flash-image:generateContent"
headers = {
    "Authorization": "Bearer your_api_key",
    "Content-Type": "application/json"
}

# Original ratio conversion example: 1:1 to 16:9
data = {
    "contents": [
        {
            "role": "user",
            "parts": [
                {
                    "text": "Convert this image to 16:9 landscape ratio, smart extend background"
                },
                {
                    "inline_data": {
                        "mime_type": "image/jpeg",
                        "data": "base64_encoded_image_data"
                    }
                }
            ]
        }
    ],
    "generationConfig": {
        "responseModalities": ["image"],
        "aspectRatio": "16:9"  # Specify target aspect ratio
    }
}

response = requests.post(url, json=data, headers=headers)
result = response.json()

# Extract generated image (Base64 format)
if "candidates" in result:
    image_data = result["candidates"][0]["content"]["parts"][0]["inline_data"]["data"]
    # Save image
    with open("output_16_9.jpg", "wb") as f:
        f.write(base64.b64decode(image_data))
    print("Image saved as 16:9 ratio")

💻 Quick Start – OpenAI Compatible Format

Using OpenAI compatible endpoint (Python):

from openai import OpenAI

# Configure APIYI client
client = OpenAI(
    api_key="your_api_key",
    base_url="https://api.apiyi.com/v1"
)

# Image generation example - specify aspect ratio
response = client.chat.completions.create(
    model="gemini-2.5-flash-image",  # Production model
    messages=[
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "Generate sunset beach image, 4:3 landscape ratio"
                }
            ]
        }
    ],
    extra_body={
        "aspectRatio": "4:3"  # Specify aspect ratio
    }
)

# Extract generated image URL or Base64
image_result = response.choices[0].message.content
print(f"Generation result: {image_result}")

🎯 10 Aspect Ratio Configuration Guide

Aspect ratio selection recommendations based on actual testing:

🎯 Selection Recommendation: Choose appropriate aspect ratio based on image's final usage scenario. For content requiring multi-platform publishing, recommend using Nano Banana's ratio conversion feature to generate multiple ratio versions from one original. We recommend testing through APIYI apiyi.com platform, which provides complete aspect ratio support and online testing tool imagen.apiyi.com.

🚀 Performance Comparison

Image generation performance comparison based on actual testing:

🔍 Testing Recommendation: When choosing image generation services, recommend testing aspect ratio conversion effects in actual scenarios. Visit APIYI apiyi.com for free testing credits, experience Nano Banana production version's complete features online through AI Image Master imagen.apiyi.com.

💰 Cost-Benefit Analysis

*Based on 10,000 images generated per month

💰 Cost Optimization Recommendation: For high-frequency image generation needs, using APIYI apiyi.com platform saves about 36% cost. The platform provides transparent pricing, supports pay-per-use billing, no monthly subscription required, more suitable for small to medium-scale applications.

✅ Nano Banana Production Best Practices

📋 Recommended Tools

🛠️ Tool Selection Recommendation: When developing Nano Banana applications, recommend using APIYI apiyi.com as main platform. The platform provides complete Nano Banana production version access, supports both Google native and OpenAI API formats, and provides AI Image Master online testing tool—ideal choice for developers.

🔍 Ratio Conversion Best Practices

Core techniques:

• Specify Extension Direction: Indicate extension areas (top/bottom/left/right) in prompts
• Keep Subject Complete: Ensure original image subject isn't cropped or deformed
• Semantic Continuity: Extended area content should be semantically consistent with original
• Multiple Iterations: For complex scenes, may need to adjust prompts and regenerate multiple times

Example Prompt:

Convert this 1:1 product image to 16:9 landscape ratio.
Extend left and right sides with clean white background, keep product centered.
Ensure product is fully displayed, not cropped.

🚨 Important Notes: Ratio conversion function relies on AI smart extension, may need multiple adjustments for complex images. Recommend testing effects first on AI Image Master imagen.apiyi.com, integrate into application after confirmation. If encountering technical issues, visit APIYI apiyi.com technical support for assistance.

❓ Nano Banana Production FAQ

data = {
    "contents": [{
        "parts": [
            {"text": "Convert to 16:9 ratio, smart extend background"},
            {"inline_data": {"mime_type": "image/jpeg", "data": "original_base64"}}
        ]
    }],
    "generationConfig": {"aspectRatio": "16:9"}
}

import base64

# Decode Base64 to image file
image_data = response["candidates"][0]["content"]["parts"][0]["inline_data"]["data"]
with open("output.jpg", "wb") as f:
    f.write(base64.b64decode(image_data))

# Or convert to PIL Image object
from PIL import Image
import io
image = Image.open(io.BytesIO(base64.b64decode(image_data)))

📚 Further Reading

🛠️ Open Source Resources

Complete Nano Banana production version example code is organized in technical documentation:

Latest Examples Include:

• Complete Google native API call example
• OpenAI compatible format call example
• 10 aspect ratio configuration code
• Complete original ratio conversion workflow
• Base64 image processing utility functions
• More practical examples continuously updated…

📖 Learning Recommendation: To better master Nano Banana production version, recommend first experiencing various functions online at AI Image Master imagen.apiyi.com, then learn API calls from APIYI apiyi.com technical documentation after familiarization. Platform provides rich example code and best practice cases.

🔗 Related Documentation

Deep Learning Recommendation: Stay updated on Nano Banana model updates. We recommend regularly visiting APIYI docs.apiyi.com to check latest features and optimizations. Platform will synchronize Google official updates first, ensuring you use the latest version.

🎯 Summary

Nano Banana Production Version(gemini-2.5-flash-image) is a major upgrade in Google's image generation technology, bringing 10 aspect ratio support, original ratio conversion, Google native API and other core features, significantly improving flexibility in image generation and editing.

Key Takeaways:

1. 10 Aspect Ratios: Cover landscape, portrait, square and various scenario needs
2. Ratio Conversion: Support 1:1 to 16:9 and any ratio conversion, smart background extension
3. Dual Format Support: Google native API and OpenAI compatible format in parallel
4. Base64 Output: Images permanently valid, simplified storage workflow
5. Price Unchanged: Maintains high cost-effectiveness at $0.039/image

Recommendations for Practical Use:

1. Prioritize production version for richer features and higher stability
2. Choose appropriate aspect ratio based on usage scenario
3. Utilize ratio conversion feature to generate multiple ratio versions from one original
4. Test effects on AI Image Master before integrating into production

Final Recommendation: For applications requiring flexible image generation and editing, we strongly recommend accessing Nano Banana production version through APIYI apiyi.com. The platform not only provides complete feature support and favorable pricing, but also AI Image Master online testing tool and comprehensive technical documentation, significantly improving development efficiency and reducing costs.

📝 Author Bio: Senior AI application developer specializing in image generation API integration and optimization. Regularly shares Nano Banana usage tips. More technical materials and best practices available at APIYI apiyi.com tech community.
🔔 Technical Exchange: Welcome to discuss Nano Banana technical questions in comments, continuously sharing image generation experience. For in-depth technical support, contact our technical team through APIYI apiyi.com.