Nano Banana - Kyma API

Overview

nano-banana is Google’s Gemini-family image generator with one killer feature most others lack: native edit-mode. Pass a reference image alongside the prompt and the model edits it in context (inpainting, style transfer, object swap) rather than starting from scratch. The preview successor nano-banana-3-flash ships the newer Gemini 3.1 image stack on the same edit-mode pattern. See nano-banana-3-flash.

Specs

Field	Value
Model ID	`nano-banana`
Creator	Google
Best for	In-context image editing, style transfer, low-cost iteration
Edit mode	Yes — pass `image_url` to enable
Aspect ratios	Suggested in prompt (model interprets — not contract-enforced today)
Pricing mode	Flat per image (1K tier default)
Default latency	~5–10s
Output	Blob-hosted URL (Vercel CDN)

Pricing

Variant	Provider cost	Kyma list
`nano-banana`	$0.034	$0.046

Flat rate. The endpoint accepts an image-size field but ignores it today — every call returns ~1K output. Kyma will switch to per-quality tiering (low/medium/high) when size control is supported. Live source: GET https://kymaapi.com/v1/pricing.

Compared to other image models on Kyma

Strength	nano-banana	`nano-banana-3-flash`	`imagen-4`	`flux-kontext-pro`
Edit mode (image-in)	★★★★★	★★★★★	—	★★★★★
Speed	★★★★★	★★★★★	★★★★	★★★★
Cost	★★★★★	★★★★★	★★★★	★★★★
Bleeding-edge quality	★★★★	★★★★★ (preview)	★★★★	★★★★
Style transfer	★★★★	★★★★★	—	★★★★

Use this when

You need to edit an existing image (inpaint a background, swap an object, change style).
You’re iterating on a reference image and want each variant to be cheap.
You’re prototyping conversational image workflows (the model accepts multi-turn editing).

Pick something else when

You need text-from-scratch without a reference image → any other image model is fine.
You need legible text in image → gpt-image-2.
You need multi-reference blending (10 sources) → flux-2-pro.
You need vector / SVG output → recraft-v4-vector.

Example — pure text-to-image

curl -X POST https://kymaapi.com/v1/images/generations \
  -H "Authorization: Bearer $KYMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nano-banana",
    "prompt": "A tiny yellow star on a black background",
    "n": 1
  }'

Example — edit-mode

curl -X POST https://kymaapi.com/v1/images/generations \
  -H "Authorization: Bearer $KYMA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "nano-banana",
    "prompt": "Add a small black cat in the foreground, keeping the rest of the scene unchanged",
    "image_url": "https://example.com/scene.jpg",
    "n": 1
  }'

Async endpoint — poll GET /v1/jobs/{id} until succeeded.

​Overview

​Specs

​Pricing

​Compared to other image models on Kyma

​Use this when

​Pick something else when

​Example — pure text-to-image

​Example — edit-mode