Last refreshed 2026-05-31. Next refresh: weekly.
Why use Nano Banana 2 (Gemini 3.1 Flash Image) on Google AI Studio?
Google AI Studio offers Nano Banana 2 (Gemini 3.1 Flash Image) with pay-as-you-go pricing at $0.50/1M input tokens. Google AI Studio is a model prototyping environment and API access point for Gemini models, offering an inference playground for developers to test and build AI applications.
Setup recipe
Python + curlpip install google-genaiexport GOOGLE_API_KEY=...import os
from google import genai
client = genai.Client(api_key=os.environ["GOOGLE_API_KEY"])
response = client.models.generate_content(gemini-3.1-flash-imageRequest example
import os
from google import genai
client = genai.Client(api_key=os.environ["GOOGLE_API_KEY"])
response = client.models.generate_content(
model="gemini-3.1-flash-image",
contents="Hello"
)
print(response.text)Gotchas
- Use the model name directly, e.g. "gemini-2.0-flash", "gemini-1.5-pro", or "gemini-2.5-pro-preview-05-06".
- The examples expect GOOGLE_API_KEY; rename it only if your application config maps the new variable.
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $0.50 |
| Output tokens | $60.00 |
Capabilities
About Nano Banana 2 (Gemini 3.1 Flash Image)
Nano Banana 2 is the GA Gemini 3.1 Flash Image model for image generation and editing through the Gemini API. It accepts text, image, and PDF inputs, returns text and images, supports search grounding and thinking, and replaces the gemini-3.1-flash-image-preview model retiring on 2026-06-25.
FAQ
What does Nano Banana 2 (Gemini 3.1 Flash Image) cost on Google AI Studio?
On Google AI Studio, Nano Banana 2 (Gemini 3.1 Flash Image) costs $0.50 per 1M input tokens and $60.00 per 1M output tokens.
What is the context window for Nano Banana 2 (Gemini 3.1 Flash Image) on Google AI Studio?
Nano Banana 2 (Gemini 3.1 Flash Image) supports a 131k token context window on Google AI Studio.
What API model ID do I use for Nano Banana 2 (Gemini 3.1 Flash Image) on Google AI Studio?
Use the model ID gemini-3.1-flash-image when calling Google AI Studio's API.
Who created Nano Banana 2 (Gemini 3.1 Flash Image)?
Nano Banana 2 (Gemini 3.1 Flash Image) was created by Google DeepMind as part of the Gemini 3.1 model family.
Is Nano Banana 2 (Gemini 3.1 Flash Image) open source?
Nano Banana 2 (Gemini 3.1 Flash Image) is not open source; the seed data lists it as proprietary.