Google

Nano Banana 3 Flash

Name: Nano Banana 3 Flash
Brand: Google
Price: 0.061 USD
Availability: InStock

Google's Gemini 3.1 image generation and editing model, now on its generally available endpoint. Reach for it when you need cost-effective, high-speed image synthesis or prompt-driven edits in production workflows.

Modalities

Text+Image → Image

Price

$0.061 / image

Speed

fast

Pricing

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

$0.061 / image

When to use Nano Banana 3 Flash

Updated 2026-08-14

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

Nano Banana 3 Flash is Google’s Gemini 3.1 image generation model. It accepts text prompts and reference images, then outputs generated or modified images. The model is optimized for speed and sits in the cheap cost tier while delivering frontier-tier visual quality.

On Kyma, the model runs through an OpenAI-compatible endpoint with automatic failover across serving paths. Prompt caching is enabled, so repeated prompt prefixes are billed at this model's cached input rate. Every response returns the exact cost in the usage.cost field and identifies the executed model via the X-Kyma-Model header.

As of 14 August 2026 this model serves on Google's generally available Gemini 3.1 image endpoint rather than the preview one it launched on. The price did not change with the move. It does not support structured JSON outputs or reasoning traces, and it is strictly an image-to-image or text-to-image model. Google plans to retire the older nano-banana model in October 2026, making this the direct migration path.

Generate marketing assets

Produce high-resolution product and campaign visuals from text prompts at low cost.

Edit reference images

Modify existing photos using text instructions while preserving layout and composition.

Prototype UI mockups

Quickly render interface concepts and layout variations for early-stage design reviews.

Batch image synthesis

Run large-scale generation jobs where speed and cheap-tier pricing matter most.

Not ideal for: Do not use this model if you require structured data extraction or multi-step reasoning alongside image generation.

Quick start

Up and running in under two minutes.

1
Create an API key
Sign up and grab a key from the dashboard — $0.50 free credit, no card required.
Get API key →

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-3-flash",
    "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 3 Flash cost?

$0.061 per image. Per image. Async generation; you only pay for successful renders.

How do I use Nano Banana 3 Flash?

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-3-flash. Signing up is free and includes $0.50 of credit — no card required.

Does this model accept image inputs for editing?

Yes, it supports both text prompts and image inputs for generation and modification tasks.

How does prompt caching affect billing on Kyma?

Repeated prompt prefixes are billed at this model's cached input rate, reducing costs for batch jobs with shared instructions.

Is this a preview release?

No. It launched on Google's preview endpoint and moved to the generally available one on 14 August 2026. The model ID you call on Kyma, nano-banana-3-flash, did not change, and neither did the price.

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

More models by Google

See all 20 →

Model	Context	Input	Output
Gemini 3.7 Flash	1M	$0.5063	$2.531
Gemini 3.6 Flash	1M	$1.013	$5.063
Gemini 3.5 Flash Lite	1M	$0.405	$3.375
Gemini 3.5 Live Translate	—	$0.0635 / min
Gemini 3.5 Flash	1M	$2.025	$12.15
Gemma 4 31B	128K	$0.0763	$0.218
Gemini 3.1 Flash Live	—	$0.0389 / min
Gemini 3.1 Pro	1M	$2.70	$16.20