Nano Banana 2 is Google's name for Gemini 3.1 Flash Image. Google describes it as bringing "the advanced world knowledge, quality and reasoning you love in Nano Banana Pro, at lightning-fast speed." Every image on this page is an official example that Google published with the model, shown with the prompt Google used.
Real-world knowledge, visualized
Nano Banana 2 draws on Gemini's knowledge of the world, so it can explain an idea instead of only illustrating it. Google uses it to turn a topic into an infographic, a diagram or a labeled comparison.
Grounded in what is real
The model can search for visual references before it draws. Google asked it to look up a real museum first, then paint it in a new style.
Words you can read, in any language
Google says Nano Banana 2 generates "accurate, legible text for marketing mockups or greeting cards," and can translate and localize the text inside an image.
For stickers, that covers planner headers, labels, date tabs and short quotes. The sticker platform KLIPY uses the same feature:
Gemini 3.1 Flash Image's Precision Text Rendering allows KLIPY to create accurate copy directly in meme-style assets, stickers, and emojis.
The same characters, every time
According to Google, the model can "maintain character resemblance of up to five characters and the fidelity of up to 14 objects in a single workflow." A mascot can stay recognizable across a whole series.
One visual, every size
Google calls these "production-ready specs": aspect ratios from square to 1:8 strips, and resolutions from 512px to 4K. On Gemini Enterprise Agent Platform, 4K output is still in preview.
Photographic quality at Flash speed
Google says Nano Banana 2 "delivers vibrant lighting, richer textures and sharper details, maintaining high-quality aesthetics at the speed expected from Flash."
Specs
| Nano Banana 2 | |
|---|---|
| Model ID | gemini-3.1-flash-image |
| Released | February 26, 2026; generally available on Gemini Enterprise Agent Platform since May 28, 2026 |
| Input | Text, images, video |
| Output | Images and text |
| Resolutions | 512, 1K, 2K, 4K |
| Aspect ratios | 15, including 1:8, 8:1, 21:9 and 9:21 |
| Reference images per prompt | Up to 14 |
| Context window | 131,072 tokens |
Pricing
On the global endpoint of Gemini Enterprise Agent Platform, Google bills image output at $60 per million tokens:
| Resolution | Output tokens | Approx. price per image |
|---|---|---|
| 512 | 747 | $0.045 |
| 1K | 1,120 | $0.067 |
| 2K | 1,680 | $0.101 |
| 4K | 2,520 | $0.151 |
Text and image input costs $0.50 per million tokens. These are Google's prices as of October 2, 2026.
Nano Banana 2, Pro or Lite?
| If you need… | Choose |
|---|---|
| Fast iteration with high quality | Nano Banana 2 |
| Maximum factual accuracy and complex compositions | Nano Banana Pro |
| The lowest cost for 1K drafts | Nano Banana 2 Lite |
Frequently asked questions
Is Nano Banana 2 the same as Gemini 3.1 Flash Image?
Yes. Nano Banana 2 is the product name; gemini-3.1-flash-image is the model ID developers use.
What sizes can it make?
Resolutions of 512, 1K, 2K and 4K, in 15 aspect ratios from 1:1 to 1:8 and 8:1.
Can it put text inside an image?
Yes. Google highlights accurate, legible text and in-image translation as core features.
How can I tell an image was made with AI?
Every image carries Google's invisible SynthID watermark and supports C2PA Content Credentials.