Google: Gemini 3.1 Flash Lite Preview

deprecatedproprietary

Gemini 3.1 Flash Lite Preview is Google's high-efficiency model optimized for high-volume use cases.

Context
1.0M
Max output
66K
Input price
$0.25/1M tokens
Output price
$1.5/1M tokens

Capabilities

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

Details

Model IDgoogle/gemini-3.1-flash-lite-preview
Provider OpenRouter
Creator Google AI
Familygemini-3.1
Licenseproprietary
Statusdeprecated
Typechat
Input modalitiestext, image, video, audio
Output modalitiestext
Open weightNo
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output66K tokens
Reasoning tokens—
Knowledge cutoff
Release date
Deprecation date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Pricing

Input
$0.25
Output
$1.5
Cache write
—
Cache read
$0.03
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-lite-preview

Google: Gemini 3.1 Flash Lite Preview

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

Gemini 3.1 Flash Lite Preview is Google's high-efficiency model optimized for high-volume use cases.

Changes · 3 entries
google/gemini-3.1-flash-lite-previewupdate1cd659eMar 24, 2026, 04:19 AM
capabilitiesjson modeyes
google/gemini-3.1-flash-lite-previewupdate2b100acMar 23, 2026, 05:30 AM
model_typechat
release_date2026-03-03
taglineGemini 3.1 Flash Lite Preview is Google's high-efficiency...
tools["function_calling"]
google/gemini-3.1-flash-lite-previewcreate7f5c66fMar 21, 2026, 05:16 AM