Nano Banana 2 0.5K API: Fast Image Generation for Previews and Production Workflows

Overview

Nano Banana 2 0.5K is an image generation model available through UniAll AI for text-to-image and image-to-image workflows. The public model id is `NanoBanana2-0.5K`.

It is best suited for teams that need fast visual iteration, lower-cost preview generation, or automated image workflows before moving selected outputs to higher resolution tiers such as 1K, 2K, or 4K.

What It Can Do

Nano Banana 2 0.5K supports two primary generation modes:

Text to image: generate images from a prompt.
Image to image: use one reference image plus a prompt to guide the output.

Supported controls include aspect ratio, resolution, and image count. Available aspect ratios include `1:1`, `16:9`, `9:16`, `4:3`, and `3:4`. The model can generate 1 to 4 images per request.

Resolution can be selected from `0.5K`, `1K`, `2K`, and `4K`, although this page focuses on the 0.5K tier.

Who Should Use It

Nano Banana 2 0.5K is useful for developers, ecommerce teams, design automation platforms, and agencies building image generation into internal tools or customer-facing products.

Common use cases include product posters, ecommerce main images, social media drafts, concept previews, creative A/B testing, and reference-based image variation.

The 0.5K tier is especially practical when teams need many quick drafts before paying for higher-resolution outputs.

API Usage

The API uses an asynchronous image generation endpoint:

```http POST /v1/images/generations ```

Example request:

```json { "model": "NanoBanana2-0.5K", "generation_mode": "image_to_image", "prompt": "A premium product poster with clean lighting and sharp details.", "image_url": "https://example.com/reference.png", "aspect_ratio": "1:1", "resolution": "0.5K", "num_images": 1 } ```

Required field:

`prompt`

Optional fields:

`image_url` for reference-image generation
`aspect_ratio` for layout control
`resolution` for output tier selection
`num_images` for batch output, from 1 to 4 images

Pricing Angle

For standard user pricing on UniAll AI, Nano Banana 2 0.5K starts at about `$0.041 / image`. API and partner pricing profiles may differ depending on account type and integration terms.

Resolution-based pricing is available:

0.5K: about `$0.041 / image` for standard users
1K: about `$0.054 / image` for standard users
2K: about `$0.082 / image` for standard users
4K: about `$0.109 / image` for standard users

This makes 0.5K a sensible default for preview pipelines, while higher tiers are better for final delivery, print-like detail, or large-format product visuals.

Comparison Notes

Compared with using only a high-resolution image model, Nano Banana 2 0.5K can reduce iteration cost when teams need to explore many prompts, layouts, or reference-image directions.

Compared with general image tools without API access, it is more suitable for automated workflows, ecommerce image systems, creative operations, and SaaS products that need structured parameters and repeatable generation behavior.

For production systems, the strongest pattern is often to generate drafts at 0.5K, select the best candidates, then regenerate or upscale selected assets at 1K, 2K, or 4K depending on the final channel.

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