Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Google chatimage_genreasoningvision

API ID: google/gemini-3.1-flash-image-preview-20260226

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Input Price
$0.50
/1M tokens
Output Price
$3.00
/1M tokens

About Nano Banana 2 (Gemini 3.1 Flash Image Preview)

Gemini 3.1 Flash Image Preview, a.k.a. "Nano Banana 2," is Google’s latest state of the art image generation and editing model, delivering Pro-level visual quality at Flash speed. It combines advanced contextual understanding with fast, cost-efficient inference, making complex image generation and iterative edits significantly more accessible. Aspect ratios can be controlled with the [image_config API Parameter](https://openrouter.ai/docs/features/multimodal/image-generation#image-aspect-ratio-configuration)

💰
Price Ranking
#1024 lowest price among 1240 Chat models

Model Specifications

Context Length
66k
Max Output
66k
Release Date
2026-02-26
Capabilities
chat image_gen reasoning vision
Input Modalities
imagetext
Output Modalities
imagetext

Best For

  • Complex reasoning, math problems, multi-step logic
  • Image analysis, document understanding, visual Q&A
  • Conversations, content writing, general assistance

Consider Alternatives For

  • Simple Q&A (cheaper models available)

💰 Real-World Cost Examples

Estimated monthly costs for common use cases

Personal AI Assistant
$1.13
/month
50 conversations/day, ~500 tokens each
Customer Service Bot
$34.50
/month
1000 tickets/day, ~800 tokens each
Data Analysis Pipeline
$47.25
/month
500 analyses/day, ~2k tokens each
Calculate Your Custom Usage

Google Model Lineup

Compare all models from Google to find the best fit

Model Input Output Context Capabilities
Nano Banana 2 (Gemini 3.1 Flash Image Preview) Current Free Free 66k chat image_gen reasoning vision
Gemma 3n 4B Free Free 33k chat
Gemini 2.5 Flash Image Preview (Nano Banana) Free Free 33k chat vision image_gen
Gemma 3n 2B (free) Free Free 8k chat tool_use
Gemma 1 2B Free Free 8k chat
Gemma 1 2B Free Free 8k chat
View All Google Models →

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$0.03 $0.10 131k

Cross Brand

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$0.0050 Free 512
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$0.0050 Free 512
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🚀 Quick Start

Get started with Nano Banana 2 (Gemini 3.1 Flash Image Preview) API

Google AI Python SDK 
import google.generativeai as genai

genai.configure(api_key="YOUR_API_KEY")
model = genai.GenerativeModel("gemini-3.1-flash-image-preview-20260226")

response = model.generate_content("Hello!")
print(response.text)

Resources

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