KymaKyma
Google

Google

Nano Banana

Nano Banana is a fast, low-cost image generation and editing model from Google. Reach for it when you need native in-context editing or rapid, budget-friendly iteration on visual assets.

Modalities

Text+Image → Image

Price

$0.046 / image

Speed

fast

Pricing

Per image. Async generation; you only pay for successful renders.

$0.046 / image

When to use Nano Banana

Updated 2026-07-31

Where this model earns its cost — and where it doesn't.

This is Google’s Gemini-based image generation model. It accepts text and image inputs to produce images, with native support for edit-mode workflows where you pass an existing image and a prompt to generate a modified output. It offers three resolution tiers: 512, 1024, and 2048.

On Kyma, it runs on the cheap tier with fast inference speeds and supports prompt caching for repeated prefixes. The endpoint is scheduled for retirement on 2026-10-20 as Google discontinues the underlying Gemini 2.5 endpoint; Kyma will automatically handle request failover if serving paths degrade, and responses will include exact costs in the usage.cost field. It does not support reasoning or structured outputs, and it is strictly an image-to-image or text-to-image generator.

In-context image editing

Pass a source image with a text prompt to modify specific regions or apply new styles.

Low-cost asset iteration

Generate multiple visual drafts quickly while staying within a tight compute budget.

Style transfer workflows

Apply consistent visual themes across different base images using text-guided transformations.

Not ideal for: Do not use this model for tasks requiring structured JSON outputs, complex logical reasoning, or high-fidelity photorealism beyond its standard resolution tiers.

Quick start

Up and running in under two minutes.

  1. 1

    Create an API key

    Sign up and grab a key from the dashboard — $0.50 free credit, no card required.

    Get API key →
  2. 2

    Make your first request

    Submit a generation job and poll until it succeeds.

    curl https://kymaapi.com/v1/images/generations \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nano-banana",
    "prompt": "A serene mountain lake at sunrise, photorealistic",
    "n": 1
  }'
# Response: { "id": "img_...", "status": "queued" }
# Poll: GET /v1/jobs/{id} until status="succeeded"

FAQ

Common questions about this model.

How much does Nano Banana cost?

$0.046 per image. Per image. Async generation; you only pay for successful renders.

How do I use Nano Banana?

Kyma is OpenAI-compatible: point your SDK's base URL at https://kymaapi.com/v1, use your Kyma API key, and set the model to nano-banana. Signing up is free and includes $0.50 of credit — no card required.

Will my existing API calls break when this model retires?

The endpoint will remain active until October 20, 2026. After that date, route requests to nano-banana-3-flash, which is the designated replacement.

Can I cache prompts to reduce costs?

Yes, prompt caching is supported and bills repeated prompt prefixes at 10% of the input rate.

Does it support structured JSON or reasoning outputs?

No, this model only outputs images and does not support reasoning or structured output formats.

Start with $0.50 free credit — no card required.Create account →

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