Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)

deprecatedproprietary

Gemini 3.1 Flash Image Preview, a.k.a.

Context
66K
Max output
59K
Input price
$0.5/1M tokens
Output price
$3/1M tokens

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Output Control
Structured Output
JSON Mode
Infrastructure
Streaming
Batch Processing

Details

Model IDgoogle/gemini-3.1-flash-image-preview
Provider OpenRouter
Creator Google AI
Familygemini-3.1
Licenseproprietary
Statusdeprecated
Typechat
Input modalitiesimage, text
Output modalitiesimage, text
Open weightNo
Parameters—
Architecture—
Context window66K tokens
Max input—
Max output59K tokens
Reasoning tokens—
Knowledge cutoff
Release date
Deprecation date
Sourceofficial

Pricing

Input
$0.5
Output
$3
Cache write
—
Cache read
—
Batch in
—
Batch out
—

Family Comparison: gemini-3.1

ModelContextMax outPricing
Google: Gemini 3.1 Flash Lite (batch)1.0M66K$0.13$0.75
Google: Nano Banana 2 Lite (Gemini 3.1 Flash Lite Image)66K59K$0.25$1.5
Google: Gemini 3.1 Flash Lite Preview1.0M66K$0.25$1.5
Google: Gemini 3.1 Flash Lite1.0M66K$0.25$1.5
Google: Nano Banana 2 (Gemini 3.1 Flash Image Preview)66K59K$0.5$3
Google: Nano Banana 2 (Gemini 3.1 Flash Image)131K33K$0.5$3
Google: Gemini 3.1 Pro Preview (batch)1.0M66K$1$6
Google: Gemini 3.1 Pro Preview Custom Tools1.0M66K$2$12
Google: Gemini 3.1 Pro Preview1.0M66K$2$12

API

GET/v1/models/openrouter/google/gemini-3.1-flash-image-preview