Nano Banana 2 API
A gritty cyberpunk alleyway market deep in the lower levels of a dystopian megacity. In the foreground, a heavily modified cyber-mechanic with exposed brushed steel joints, carbon fiber armor plates, and tangled glowing optical cables, repairing a heavily rusted, neon-lit delivery drone. Rain-slicked uneven asphalt reflecting vivid magenta, cyan, and amber holographic advertisements. Towering brutalist skyscrapers covered in air conditioning units and satellite dishes, vanishing into thick, polluted smog above. Dense crowds of shadowy figures wearing worn synthetic leather jackets and glowing cybernetic visors. Steam billowing from rusted floor grates, an intricate maze of exposed copper pipes, and blinking server racks lining the crumbling concrete walls. Cinematic lighting, volumetric fog, anamorphic lens flare, harsh neon cast light, deep contrasting shadows, gritty grime texture, sharp focus on the mechanic's cybernetic hand.
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Supported formats: JPEG, JPG, PNG, WEBP
Maximum file size: 20MB; Maximum files: 14
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Nano Banana 2 API — Google's Fastest Image Model, One API Key Away
Powered by Gemini 3.1 Flash Image. Generate and edit 4K images with accurate text rendering and multi-image consistency — with Flash-speed inference and no Google Cloud setup.

Billing Rules
- •Output image price varies by quality (0.5K/1K/2K/4K)
- •Reference images: charged per image uploaded
- •Web search: charged per request when enabled. A single request may trigger multiple searches.
Pricing
| Model | Mode | quality | Price |
|---|---|---|---|
| Nano Banana 2 | Input Image | Reference | $0.0004/ image(0.0324 Credits) |
| Nano Banana 2 | Output Image | 0.5K | $0.0359/ image(2.5817 Credits) |
| Nano Banana 2 | Output Image | 1K | $0.0538/ image(3.8708 Credits) |
| Nano Banana 2 | Output Image | 2K | Popular $0.0806/ image(5.8061 Credits) |
| Nano Banana 2 | Output Image | 4K | $0.1210/ image(8.7092 Credits) |
| Nano Banana 2 | Web Search | - | $0.0112/ request(0.8064 Credits) |
If it's down, we automatically use the next cheapest available—ensuring 99.9% uptime at the best possible price.
Capabilities of the Nano Banana 2 API
Semantic edits from plain language
The Nano Banana 2 API understands intent — "remove the glare," "swap the mug for a glass," "make the background warmer." Built on Gemini 3.1 Flash's reasoning engine, it applies changes while preserving the rest of the scene. No masks, no layers. Describe the outcome, get the result. Ideal for ecommerce cleanup, content refreshes, and social ad variations.

Accurate text rendering and localization
Nano Banana 2 delivers strong text rendering accuracy — a key improvement over earlier Flash models. Posters, menus, price cards, UI mockups, and multilingual assets stay readable after generation and editing. Replace wording, adjust labels, and maintain layout balance across languages without rebuilding every design.

Multi-image fusion for consistent identity
Maintain up to 5 characters and 14 objects in a single workflow. Keep a character, mascot, or product visually aligned across scenes, angles, and backgrounds. Gemini 3.1 Flash Image's composition understanding makes catalog shoots, ad series, and brand campaigns scalable without manual consistency checks.

Why developers choose Nano Banana 2 API
Built on Gemini 3.1 Flash Image preview, Nano Banana 2 API delivers reliable edits, clear text rendering, and multi-image consistency, with official and Lite routes to balance stability and cost.
Flash-speed inference
Built on the Gemini 3.1 Flash architecture, Nano Banana 2 delivers Pro-level world knowledge, quality and reasoning at Flash speed. Faster generation means tighter feedback loops for interactive applications and batch workflows.
Production-grade 4K resolution
Generate 1K, 2K, or native 4K outputs with legible text. Posters, menus, diagrams, and UI mockups ship without extra cleanup or upscaling.
One key, zero setup
Access Nano Banana 2 through EvoLink with a single API key. No Google Cloud project, no billing configuration, no quota requests. Same OpenAI-compatible format you already use.
How to integrate the Nano Banana 2 API
Send an image, describe the change, and receive a ready-to-use result.
Step 1 — Get your API key
Sign up on EvoLink (free), grab your API key from the dashboard. Works with Nano Banana 2 and 200+ other models instantly.
Step 2 — Send your request
POST to the EvoLink endpoint with your image (URL or Base64), prompt, and optional reference images. OpenAI-compatible format — minimal code changes if you're migrating from another provider.
Step 3 — Review and deploy
Receive the generated or edited image. Save to your storage, publish across channels. Scale up with batch processing when ready.
Key features of the Nano Banana 2 API
Built for editing-heavy production workflows
Instruction-based semantic editing
The Nano Banana 2 API turns short prompts into targeted edits such as remove, replace, or restyle while preserving composition, so teams avoid manual masking and keep iteration fast.
Clear text inside images
Gemini 3.1 Flash Image is built to render readable text for posters, menus, diagrams, and UI mockups, helping Nano Banana 2 API outputs stay legible across languages and formats.
Multi-image fusion (up to 14)
Blend multiple references in one Nano Banana 2 API request to keep people, products, and visual style consistent across a series of edits or variations.
Lighting and color adjustments
Refine mood by changing color grades, lighting direction, or day and night settings. This is useful for brand style alignment and seasonal campaigns.
1K to 4K output options
Generate 1K, 2K, or 4K results and upscale for delivery, keeping edges crisp for web, apps, and print-ready assets.
Official and Lite routing
Choose the official Gemini 3.1 Flash Image preview route for stability, or use the Nano Banana 2 Lite route for lower cost when you can trade some control.
Nano Banana 2 API FAQs
Everything you need to know about the product and billing.
API Reference
Select endpoint
Authentication
All APIs require Bearer Token authentication.
Authorization:
Bearer YOUR_API_KEY/v1/images/generationsGenerate Image
Create an image generation task using text prompts or reference images. Supports text-to-image, image-to-image, and image editing modes.
Asynchronous processing mode, use the returned task ID to .
Generated image links are valid for 24 hours, please save them promptly.
Request Parameters
modelstringRequiredDefault: gemini-3.1-flash-image-previewImage generation model name.
| Value | Description |
|---|---|
| gemini-3.1-flash-image-preview | Nano Banana 2 model |
gemini-3.1-flash-image-previewpromptstringRequiredPrompt describing the image to be generated or how to edit the input image.
Notes
- Limited to 2000 tokens
A cat playing in the grasssizestringOptionalDefault: autoAspect ratio of the generated image.
| Value | Description |
|---|---|
| auto | Auto detect |
| 1:1 | Square (1:1) |
| 1:4 | Tall vertical (1:4) - Coming soon |
| 4:1 | Wide horizontal (4:1) - Coming soon |
| 1:8 | Ultra-tall vertical (1:8) - Coming soon |
| 8:1 | Ultra-wide horizontal (8:1) - Coming soon |
| 2:3 | Portrait (2:3) |
| 3:2 | Landscape (3:2) |
| 3:4 | Portrait (3:4) |
| 4:3 | Landscape (4:3) |
| 4:5 | Portrait (4:5) |
| 5:4 | Landscape (5:4) |
| 9:16 | Vertical (9:16) |
| 16:9 | Horizontal (16:9) |
| 21:9 | Ultra-wide (21:9) |
Notes
- Extreme aspect ratios (1:4, 4:1, 1:8, 8:1) are not yet available
16:9qualitystringOptionalDefault: 2KQuality of the generated image.
| Value | Description |
|---|---|
| 0.5K | Draft quality (lowest cost) |
| 1K | Standard quality |
| 2K | High quality (default) |
| 4K | Ultra quality (Higher Cost) |
Notes
- Different quality levels have different pricing
2Kmodel_params.web_searchbooleanOptionalWhether to enable web search. When enabled, the model will use web search results to optimize image generation. Nested inside model_params object.
trueimage_urlsarrayOptionalReference image URL list for image-to-image and image editing functions.
Notes
- Max 14 images per request
- Max size: 20MB per image
- Formats: .jpeg, .jpg, .png, .webp
- URLs must be directly accessible by the server
- Maximum 4 real person images
https://example.com/image1.pngcallback_urlstringOptionalHTTPS callback address after task completion.
Notes
- Triggered on completion, failure, or cancellation
- Sent after billing confirmation
- HTTPS only, no internal IPs
- Max length: 2048 chars
- Timeout: 10s, Max 3 retries
https://your-domain.com/webhooks/image-task-completed