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Google

Gemini Nano Banana 2.1

Save 26%Official

google/gemini-nano-banana-2.1

Also callable as nano-banana-2-1

Google Nano Banana 2.1 — the recommended Gemini model for image generation and editing, with 1K / 2K / 4K output, billed per image.

Get an API keyView code sample
Input modalities
text · image
Output modalities
image
Capabilities
Image generation · Image editing
Upstream release
2026-10-06
RouteMux name
google/gemini-nano-banana-2.1
Live model playground

Try Gemini Nano Banana 2.1 here

Tune the request, see the current price ceiling, and inspect the real response without leaving this model page.

syncimage
1Configure input
0 / 20,000
Source images for editing

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Maximum estimated cost—
2Live result

Your result will appear here

Enter an input on the left. The same RouteMux Playground execution and billing path powers this embedded test.

image

Gemini Nano Banana 2.1 pricing: Standard, 2K and 4K per image

Billed per image, not per token: Standard $0.025 per image, 2K $0.04 per image, and 4K $0.08 per image. 2K and 4K support both text-to-image and image editing — just pass the matching size.

Prices verified 2026-10-20 · Charged only when an image is returned

StandardSave 26%
$0.025/ image
Official $0.0336
✓ Text-to-image✓ Image editing
2KNew
$0.04/ image

Measured 2048×2048 · 2736×1536 · 1536×2736

✓ Text-to-image✓ Image editing
4KNew
$0.08/ image

Measured 3840×2160 · 2160×3840

✓ Text-to-image✓ Image editing

Estimate by image

Resolution
Estimated cost
$4.00
Failed requests are free

How to get 2K / 4K

# set size to any 2K / 4K value from the table
curl https://api.routemux.com/v1/images/generations \
  -H "Authorization: Bearer $ROUTEMUX_API_KEY" \
  -d '{"model":"google/gemini-nano-banana-2.1",
       "prompt":"...", "size":"3840x2160"}'
# returns data[0].b64_json (PNG), same shape as Standard

Billing details

  • Price depends only on resolution — not on prompt length or quality
  • 2K / 4K return one image per request (n must be 1); mask is not supported
  • A size not listed in the table returns 400 and is not charged
  • Standard-tier image editing also charges a small amount for input-image tokens
  • You pay only when an image is returned — failures, timeouts and blocked requests are free
Gemini Nano Banana 2.1 price per image (USD, verified 2026-10-20)
TierMeasured output sizesize valuePrice per imageVs. list price
Standard——$0.025/ imageOfficial $0.0336Save 26%
2K2048×2048 / 2736×1536 / 1536×27362048x2048, 2560x1440, 1440x2560$0.04/ imageList price is per token; no published per-image price
4K3840×2160 / 2160×38403840x2160, 2160x3840$0.08/ imageList price is per token; no published per-image price

Limited time10% extra Credits on your first top-up — up to 200 bonus Credits

Applies to your first top-up within 72 hours of signing up. Minimum $20, once per account.

Sign up and claimNo subscription. Pay for what you use.

Key capabilities

Image generationImage editing

Interface and protocols

OpenAI Images

Use any of these IDs to call this model via the API.

RouteMux namegoogle/gemini-nano-banana-2.1
Common namenano-banana-2-1

Replace the ROUTEMUX_KEY placeholder with your API key. Create one →

from openai import OpenAI

client = OpenAI(
    base_url="https://api.routemux.com/v1",
    api_key="<ROUTEMUX_KEY>",
)

response = client.images.generate(
    model="google/gemini-nano-banana-2.1",
    prompt="A red panda coding under the moonlight",
    n=1,
)
print(response.data[0].url)
base_url: https://api.routemux.com/v1

Performance (last 30 days)

Related models

Gemini Nano Banana 2.1 FAQ

›What is Gemini Nano Banana 2.1?

Google Nano Banana 2.1 — the recommended Gemini model for image generation and editing, with 1K / 2K / 4K output, billed per image.

›How much does the Gemini Nano Banana 2.1 API cost?

Through RouteMux, Gemini Nano Banana 2.1 is priced at $0.025, below the official list price.

›How do I call Gemini Nano Banana 2.1 via API?

Gemini Nano Banana 2.1 is OpenAI-compatible: point your base URL at RouteMux and set the model field to google/gemini-nano-banana-2.1 — no code changes needed.

›Which input and output modalities does Gemini Nano Banana 2.1 support?

Gemini Nano Banana 2.1 accepts text, image as input and produces image as output.

›When was Gemini Nano Banana 2.1 released?

Gemini Nano Banana 2.1 was released on October 6, 2026.

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