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

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

deprecated
google/gemini-3.1-flash-image-preview

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

Changes · 9 entries
google/gemini-3.1-flash-image-previewupdateca7a400Nov 2, 2026, 03:02 AM
max_output_tokens65536→58982
google/gemini-3.1-flash-image-previewupdatee3d7dedAug 31, 2026, 04:13 AM
max_output_tokens65536→58982
google/gemini-3.1-flash-image-previewupdatedbe2d73Jul 31, 2026, 06:07 AM
context_window131072→65536
google/gemini-3.1-flash-image-previewupdatebf78dcfJul 25, 2026, 05:49 AM
max_output_tokens32768→65536
google/gemini-3.1-flash-image-previewupdate88d97e5Jun 30, 2026, 04:49 AM
max_output_tokens65536→32768
google/gemini-3.1-flash-image-previewupdate73d11c6May 18, 2026, 03:39 AM
context_window65536→131072
google/gemini-3.1-flash-image-previewupdate1cd659eMar 24, 2026, 04:19 AM
capabilitiesjson modeyes
google/gemini-3.1-flash-image-previewupdate2b100acMar 23, 2026, 05:30 AM
model_typechat
release_date2026-02-26
taglineGemini 3.1 Flash Image Preview, a.k.a.
google/gemini-3.1-flash-image-previewcreate7f5c66fMar 21, 2026, 05:16 AM