Nano Banana 2 Lite — low-cost 1K image generation
Nano Banana 2 Lite is Google's Gemini 3.1 Flash Lite Image model: the fastest, cheapest member of the family for 1K images. About $0.02565 per image, billed by tokens.
- Text to image
- Image editing
- 1K output
- 14 aspect ratios
- Up to 14 references
- Video and PDF input
Try Nano Banana 2 Lite before you write any code
Run Nano Banana 2 Lite with the exact request your code will send. Every parameter the API takes is here.
gemini-3.1-flash-lite-image-official$22.50 / 1M image output tokens
Describe an image, add references if you have them, and submit once. The result appears when the task completes.
What to create or change. Subject, setting, lighting and style.
Images, videos or PDFs the model should read. Files are uploaded and sent as URLs.
Up to 14, sent as fileData URLs.
Default matches your first reference, otherwise 1:1.
Output resolution. 1K is the default.
Image only, or image with a short text reply.
Standing rules for the model, such as a house style.
Blocking threshold for this category.
Greyed-out options relax content filtering. They are available through the API only, not in the playground.
Blocking threshold for this category.
Greyed-out options relax content filtering. They are available through the API only, not in the playground.
Blocking threshold for this category.
Greyed-out options relax content filtering. They are available through the API only, not in the playground.
Blocking threshold for this category.
Greyed-out options relax content filtering. They are available through the API only, not in the playground.
0–2. Leave empty for the model default.
0–1. Leave empty for the model default.
Whole number, 1 or more.
Whole number. Reuse it to reproduce a result more closely.
Caps text and thinking output.
One per line, up to 5.
Only 1: one request returns one image.
How many tokens each reference uses. Lower is cheaper.
Return the model's thought summary with the image.
MINIMAL is fastest; HIGH reasons more before drawing.
Estimated at current rates from the image tokens of the selected size plus a measured sample of text and thinking tokens. Reference inputs add a little on Official.
Try one of these prompts
Sample images generated with Nano Banana 2 Lite through this API
Nano Banana 2 Lite pricing
Nano Banana 2 Lite is billed by the tokens each render reports, at the lowest token rates in the family. Every image is 1K, so the cost per image stays close to one figure.
- Official
- $0.02565/image
- Official
- 779images
Both prices come from the rates that bill your account. Failed requests are not charged.
Official estimates use the image tokens Google publishes for each size, plus a measured sample of 398 text and thinking tokens and 11 prompt tokens.
Nano Banana 2 Lite cost by image size
Nano Banana 2 Lite renders at 1K only. Official prices below add a typical text and thinking allowance.
| Image size | Image tokens | Price · Official |
|---|---|---|
| 1K | 1,120 | $0.02565 |
Every image is 1K, so the image tokens are the same for each render; text and thinking vary a little with the prompt.
Price your own Nano Banana 2 Lite request
Pick a size and watch the figure. It is computed from the live rate and the image tokens Google publishes for each size, so it moves when the price does.
A pre-submit estimate. Official bills image output, text and thinking output, and input at their own rates.
| Item | How it is measured | Rate | Billing |
|---|---|---|---|
| Official · Image output | Image tokens reported for the render | $22.50 / 1M$30.00 / 1M | Charged from real usage |
| Official · Text and thinking output | Text and thinking tokens reported for the render | $1.125 / 1M$1.50 / 1M | Charged from real usage |
| Official · Input | Prompt and reference tokens | $0.1875 / 1M$0.25 / 1M | Charged from real usage |
| Failed requests | Any task that ends failed | Free | Nothing is charged |
What is Nano Banana 2 Lite?
Nano Banana 2 Lite is the nickname of Gemini 3.1 Flash Lite Image, the efficiency model in Google's Nano Banana family. It trades 2K and 4K output for the lowest price and latency; Google's model page lists its latest update as June 2026.
On SeedRouter you call Nano Banana 2 Lite with Google's own generateContent request body. Submit once, get a task ID, and collect a hosted image URL when the task completes.
Google model name: Gemini 3.1 Flash Lite Image · Stable model ID: gemini-3.1-flash-lite-image · Input limit: 65,536 tokens.
Two ways to use Nano Banana 2 Lite
Call the API from your backend, or hand the job to a coding agent.
Call the API
Send the Nano Banana 2 Lite request from your server, keep the task ID, and read the finished image from the task.
- 1Create an API key
- 2POST the request body
- 3Poll the task until it completes
Let an agent do it
Copy a ready prompt into Claude Code, Codex or Cursor. It asks before spending and downloads the result.
- 1Copy the prompt
- 2Fill in what you want
- 3Approve the request
What Nano Banana 2 Lite is good at
Volume work where cost and speed matter more than resolution.
Lowest price in the family
Google's token rates for Nano Banana 2 Lite are half those of Nano Banana 2.
Fast turnaround
Minimal thinking by default keeps each Nano Banana 2 Lite render short.
Think harder when needed
Switch the thinking level to HIGH for tricky prompts, per request.
Up to 14 references
Nano Banana 2 Lite keeps objects faithful across a set from one batch of references.
Every aspect ratio
Nano Banana 2 Lite renders square, portrait, wide and extreme 1:8 or 8:1 strips at 1K.
Reads video and PDFs
Nano Banana 2 Lite can summarise a clip or document as a single still.
What teams use Nano Banana 2 Lite for
Large catalogues
Nano Banana 2 Lite suits thousands of product variants where every cent per image counts.
Previews and drafts
Show users a quick Nano Banana 2 Lite preview before a full-quality render.
Everyday social posts
Nano Banana 2 Lite at 1K is plenty for feeds, stories and chat.
In-app generation
Let your own users generate Nano Banana 2 Lite images without runaway costs.
Prompt testing
Iterate on prompts cheaply with Nano Banana 2 Lite before moving them to a bigger model.
Thumbnails
Nano Banana 2 Lite makes small covers and icons at volume.
Start with Nano Banana 2 Lite in four steps
- 01
Create a key
Sign in, top up any amount, and create an API key. Credits never expire.
- 02
Send one request
POST the Nano Banana 2 Lite body to /v1/images/generations with your prompt and any reference URLs.
- 03
Poll the task
Keep the task ID and check it every few seconds until the status is completed.
- 04
Download the image
Save the hosted image URL from the task output to your own storage.
Nano Banana 2 Lite at a glance
The facts that decide whether Nano Banana 2 Lite fits the job.
| Feature | Nano Banana 2 Lite |
|---|---|
| Output size | 1K only |
| Aspect ratios | 14 (1:8 to 8:1) |
| References | Up to 14 objects |
| Input types | Text, image, video, PDF |
| Thinking | MINIMAL (default) or HIGH |
| Billing | Per token (Official) |
Need 2K or 4K, or consistent characters? See Nano Banana 2 or Nano Banana Pro.
What to know before you start
1K only
Nano Banana 2 Lite does not render 2K or 4K. Pick Nano Banana 2 for larger output.
One image per request
Send several requests for a batch.
Output format
The response format setting is not available on this model; images come back as the model renders them.
References are URLs
Send Nano Banana 2 Lite references as public HTTP(S) links, not base64.
Why run Nano Banana 2 Lite on SeedRouter
Pay for what each render uses
Nano Banana 2 Lite is billed by the tokens each render reports, at the lowest token rates of the family. Same key and request body as the other models.
Failed requests are free
If a task ends failed, nothing is charged. You only pay for images that are delivered.
Credits never expire
Top up once and use the balance whenever you need it. No subscription.
Hosted results
Finished images come back as URLs on our CDN. Keep a copy of anything you need long term.
One key for every model
The same key and balance work for the other image models in the catalogue.
Other image models on SeedRouter
Same key, same balance, same task API.
Create and edit images with GPT Image 2 on SeedRouter. Use text prompts, reference images and transparent backgrounds, with a live playground and usage-based pricing.
View pricingGenerate and edit images with GPT Image 2.5 Flare or Sunburst on SeedRouter. Six quality steps up to max, transparent backgrounds, a live playground and pay-as-you-go pricing.
View pricingCreate and edit images with Nano Banana 2 (Gemini 3.1 Flash Image): 512px to 4K, 14 aspect ratios, up to 14 references. Pay per image or per token.
View pricingCreate and edit images with Nano Banana Pro (Gemini 3 Pro Image): 1K to 4K output, built-in thinking, up to 14 references. Pay per image or per token.
View pricingNano Banana 2 Lite guides
Practical guides to choosing, pricing and integrating the model.
Use the Nano Banana 2 API step by step: create a key, send a generateContent request, poll the task, add reference images, and let a coding agent run it.
Compare Nano Banana 2, Nano Banana Pro and Nano Banana 2 Lite on image size, aspect ratios, references, thinking and billing, and pick one per job.
Current Nano Banana API pricing for Nano Banana 2, Pro and 2 Lite: flat per-image and token billing, cost by resolution, and when each billing fits.
Nano Banana 2 Lite FAQ
What is Nano Banana 2 Lite?+
Nano Banana 2 Lite is Google's name for Gemini 3.1 Flash Lite Image, the lowest-cost and lowest-latency model in the Nano Banana family. It generates and edits 1K images in 14 aspect ratios with up to 14 references.
When was Nano Banana 2 Lite released?+
Google lists June 2026 as the latest update of Gemini 3.1 Flash Lite Image. It is available on SeedRouter now under gemini-3.1-flash-lite-image.
Nano Banana 2 Lite vs Nano Banana 2: what is the difference?+
Nano Banana 2 Lite renders 1K only and costs less. Nano Banana 2 adds 512px, 2K and 4K output and keeps up to four characters consistent. Pick Lite for volume, Nano Banana 2 for final assets.
How much does Nano Banana 2 Lite cost?+
Nano Banana 2 Lite is billed by the tokens each render reports; a typical 1K render comes to about $0.02565. The pricing section shows the live rates.
Can Nano Banana 2 Lite make 2K or 4K images?+
No. Google supports 1K only for this model. Use Nano Banana 2 or Nano Banana Pro for 2K and 4K.
Is Nano Banana 2 Lite free?+
The API is paid. On SeedRouter you top up once, pay only for the tokens each render uses with no subscription, and failed requests are not charged.
How do I get an API key for Nano Banana 2 Lite?+
Create a SeedRouter account, add credit, and create a key in the dashboard. One key covers every model here.
Generate your first Nano Banana 2 Lite image
Try it in the Playground, then move the same request into your code.