Nanobanana Flash - Fast AI Image Generator

Generate AI images quickly and affordably using Google's Gemini 2.5 Flash model. Perfect for rapid prototyping, quick drafts, and high-volume image generation.

Why Nanobanana Flash?

• Lightning Fast: Fastest Gemini image generation model
• Budget-Friendly: ~$0.039 per image (lowest cost option)
• High Volume: Great for batch generation tasks
• BYOK Model: Use your own Google AI API key
• Demo Mode: Test the actor without an API key

Getting Your FREE Google AI API Key

1. Go to Google AI Studio
2. Sign in with your Google account
3. Click "Create API Key"
4. Copy your API key and paste it in the actor input

It's completely free to get started! Google provides generous free tier usage.

Input Parameters

Parameter	Type	Description
googleApiKey	string	Your Google AI Studio API key
prompt	string	Describe the image you want to generate
numberOfImages	integer	How many variations to generate (1-4, default: 4)
aspectRatio	string	Image dimensions: 1:1, 16:9, 9:16, 4:3, 3:4
negativePrompt	string	Things to avoid in the image (optional)
demoMode	boolean	Test with sample data (no API key needed)

Example Input

{
    "googleApiKey": "YOUR_GOOGLE_AI_API_KEY",
    "prompt": "A cute cartoon robot holding a coffee cup, colorful background, digital art style",
    "numberOfImages": 4,
    "aspectRatio": "1:1",
    "negativePrompt": "realistic, photographic, blurry"
}

Output

The actor outputs:

• Generated images saved to key-value store
• Public URLs for each image
• Metadata including prompt, aspect ratio, and generation timestamp

{
    "prompt": "A cute cartoon robot...",
    "imageCount": 4,
    "aspectRatio": "1:1",
    "model": "gemini-2.5-flash-image",
    "generatedAt": "2024-12-24T10:30:00Z",
    "images": [
        { "index": 1, "url": "https://...", "mimeType": "image/png" },
        { "index": 2, "url": "https://...", "mimeType": "image/png" }
    ]
}

Use Cases

• Rapid Prototyping: Quick mockups and concept art
• Social Media Content: Fast turnaround for daily posts
• A/B Testing: Generate multiple variations quickly
• Thumbnail Generation: Bulk create video/blog thumbnails
• Brainstorming: Explore visual ideas at low cost
• Training Data: Generate synthetic images at scale

Pricing Comparison

Actor	Cost per Image	Speed	Max Resolution
Nanobanana Flash	~$0.039	Fast	1024x1024
Nanobanana Pro	~$0.08	Moderate	4K (3840x2160)
Gemini Imagen	~$0.05	Moderate	1024x1024

Flash vs Pro - When to Use Each

Use Flash When:

• Speed is more important than resolution
• Working on drafts or concepts
• Generating high volumes of images
• Budget is a primary concern
• 1024x1024 resolution is sufficient

Use Pro When:

• Need 2K/4K resolution
• Creating print materials
• Professional/commercial use
• Text rendering in images
• Maximum quality required

Specifications

Spec	Value
Model	gemini-2.5-flash-image
Max Resolution	1024x1024
Generation Speed	~2-3 seconds per image
Cost	~$0.039 per image
Aspect Ratios	1:1, 16:9, 9:16, 4:3, 3:4

Troubleshooting

API Key Issues

• Ensure your API key is valid at AI Studio
• Check you haven't exceeded your quota

Rate Limits

• Flash model has generous rate limits
• For very high volume, batch your requests

Model Access

• Gemini 2.5 Flash is widely available
• Should work with most Google AI API keys

Related Actors

• Nanobanana Pro - Premium quality, 4K resolution
• Gemini Image Generator - Imagen model

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Built by John Rippy | johnrippy.link

Support

• Issues: Open a GitHub issue
• Questions: Contact via LinkedIn

Keywords

AI image generation, Gemini Flash, Google AI, text-to-image, BYOK, fast image generator, budget AI images, quick image generation, batch images, social media images, thumbnail generator, rapid prototyping, Nanobanana, affordable AI art