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OpenRouter

Nano Banana 2 (Gemini 3.1 Flash Image) API

OpenRouter
About

Build advanced reasoning agents with Nano Banana 2 (Gemini 3.1 Flash Image), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.50/1M input and $3.00/1M output tokens. Access Nano Banana 2 (Gemini 3.1 Flash Image) via the OpenRouter API with up to 33K output tokens.

Capabilities

Input Modalities

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Output Modalities

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Reasoning
Yes
Structured Output
Yes
Tool Use
No
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
131K

Tokens

Input Limit
131K

Tokens

Max Output
33K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.50
Output
$3.00
Frequently Asked Questions

Nano Banana 2 (Gemini 3.1 Flash Image) by OpenRouter costs $0.50 per 1M input tokens and $3.00 per 1M output tokens.

Model Details
ID
google/gemini-3.1-flash-image
Provider
OpenRouter
Family
gemini
Release Date
Jun 18, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation