1,245 / 20,000
Choose an aspect ratio. Auto adapts to your reference image.
1K: 4 credits ($0.02) · 2K: 6 credits ($0.03) · 4K: 10 credits ($0.05).
Drop files here, paste files, or add a URL. Use up to 10 JPEG, PNG, or WebP images, 10MB each.
Example Output
This is sample data. Generate a new result to see real output.
Public example · Ocean & Earth · Museum Exhibit
Transparent pricing with no hidden fees. Pay as you go.
nano-banana-2.1nano-banana-2.1nano-banana-2.1| Model | Spec | PoYo price | Official price | You save |
|---|---|---|---|---|
| nano-banana-2.1 | 1K | $0.020/image 4 credits /image | - | - |
2K | $0.030/image 6 credits /image | - | - | |
4K | $0.050/image 10 credits /image | - | - |
* Actual fees are based on the final output.
Complete guide to using Nano Banana 2.1 API — High-Resolution Images and Reference-Guided Editing
Improve visual detail, text layout and subject consistency while creating high-resolution assets from multiple references.
01
Choose image detail for each task, from exploring ideas to preparing finished assets. Nano Banana 2.1 offers 1K, 2K and 4K: use the default 1K for everyday content, 2K for detail, or 4K for product displays and large layouts.
02
Product photographs and scene artwork need expressive materials and lighting. Nano Banana 2.1 improves visual quality and realism. Describe textures, reflections and camera perspective in your prompt to guide metal, fabric and natural lighting toward your creative direction, adding visual detail to product displays and concept designs.
03
Posters, labels and infographics need words and images to communicate together. Nano Banana 2.1 enhances multilingual text rendering and layout. Specify wording, language and placement in your prompt to guide headlines, labels and graphic hierarchy for clear visual content across audiences.
04
Combine product, character and style references into a new creative direction. Nano Banana 2.1 accepts up to 10 images per request and strengthens multi-reference composition and editing. Explain each reference's role in your prompt to explore new compositions and visual approaches around existing assets.
05
Image series need consistent subject features as scenes change. Nano Banana 2.1 improves consistency for people, products and multi-reference edits. Reuse an original or generated image as a reference, then describe new scenes, moods and details to connect character visuals and product series.
06
Explore backgrounds, colors and art styles around one idea. Nano Banana 2.1 improves style transformation and editing through prompts and references. Choose from ten aspect ratios for your publishing format, extending existing images into posters, social graphics and branded assets.
Create product photographs, lifestyle scenes and catalog visuals with Nano Banana 2.1 API. Use reference images to guide product appearance and choose 2K or 4K output for detailed listings and campaign assets. Explore new settings around existing product imagery to build a cohesive visual collection for your store.
Build campaign concepts, promotional posters and branded image variations with Nano Banana 2.1 API. Combine visual references with precise wording to guide layouts, product placement and brand style. Select the aspect ratio for each publishing channel and use resolution-based pricing to plan the cost of each creative iteration.
Generate square posts, portrait stories and landscape visuals with Nano Banana 2.1 API. Describe the message, mood and composition you want, then reuse a reference image to maintain a recognizable style across a series. Start at 1K for regular publishing or choose higher resolution for reusable master assets.
Explore concept art, illustration directions and style transformations with Nano Banana 2.1 API. Use multiple references to communicate color, composition and subject detail, then refine the output with a new prompt. Its flexible resolution and aspect ratio options help teams prepare images for mood boards, presentations and visual design work.
Develop character scenes and story frames with Nano Banana 2.1 API. Reference-guided editing helps carry subjects into new locations, moods and compositions. Reuse a previous result to explore the next visual direction, and choose portrait, landscape or widescreen ratios to match your storyboard or creative presentation.
Create illustrated explanations, diagrams and multilingual visual material with Nano Banana 2.1 API. Provide the exact labels and desired arrangement in your prompt, then choose a resolution suited to the level of detail. Build presentation artwork, learning resources and editorial visuals around your own content and reference images.
Explore how Nano Banana 2.1 improves visual quality, text layout, subject consistency and reference-guided editing to choose a model for product imagery, marketing content and creative series.
| Feature | Nano Banana 2.1 | Nano Banana 2 |
|---|---|---|
| Base Model | Gemini 3.6 Flash | Gemini 3.1 Flash Image |
| Visual Quality | Improved materials, lighting and fine visual detail | Realistic images and a variety of creative styles |
| Text and Layout | Enhanced multilingual text rendering and infographic layouts | Multilingual text, posters and product labels |
| Subject Consistency | Stronger consistency for people, products and multi-image edits | Reference-guided character and product imagery |
| Multi-Image References | Up to 10 images with improved multi-reference editing | Up to 14 images to combine subject and style references |
| Style Editing | Improved stylization and editing performance | Background, color palette and art style transformations |
| Output Resolutions | 1K, 2K, 4K | 1K, 2K, 4K |
Both models are available on PoYo for text-to-image generation and reference-guided editing.
Step 1: Register and Create an API Key
Create a PoYo account and get an API key from your dashboard to access Nano Banana 2.1.
Create API Key →
Step 2: Top Up Credits
Plan your image budget: 4 credits for 1K, 6 credits for 2K, or 10 credits for 4K.
Add Credits →
Step 3: Integrate the API or Try the Playground
Submit a request to /api/generate/submit with model set to nano-banana-2.1. Include prompt inside input, plus optional image_urls, size and resolution. Query results with the returned task_id.
View Documentation →
Create a key in the PoYo dashboard, top up credits and submit your first image request. Explore prompts and output settings in the online Playground, then reuse the same model and parameters in your application. Move from a visual experiment to an integrated workflow with clear API steps.
Start at 4 credits ($0.02) per 1K image and choose 2K or 4K for 6 or 10 credits. Image generation and reference-guided editing follow the same pricing. Select the resolution that fits each creative task and use the displayed credit estimate to plan your image budget.
Build around PoYo's existing submit and task-status endpoints with nano-banana-2.1. Task IDs, response JSON and optional callbacks help connect image results to your application. Use the same asynchronous workflow for prompt-based creation and reference-image editing as your product evolves.
Move between text-to-image generation and reference-guided editing with one model identifier. Up to 10 references, ten aspect ratios and three resolutions give teams practical controls for product imagery, branded series, posters and character scenes. Explore variations and refine a result by reusing it as a reference.
