gemini-3.1-flash-lite

proprietary

The model supports text, image, video, audio, and PDF inputs, and is designed for high-volume agentic workflows, simple data extraction, and applications where latency and API cost are the primary constraints.

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

Provider Google Vertex AI
Creator Google AI
Familygemini-3.1
Licenseproprietary
Statusactive
Typechat
Input modalitiestext, image, video, audio
Output modalitiestext, image, audio
Open weightNo
Parameters—
Architecture—
Context window1.0M tokens
Max input—
Max output66K tokens
Reasoning tokens—
Knowledge cutoff
Release date—
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

Endpoints

Generate ContentPOST
Generate text from multimodal inputhttps://us-central1-aiplatform.googleapis.com/v1beta/models/{model}:generateContent
Stream ContentPOST
Stream text generation responseshttps://us-central1-aiplatform.googleapis.com/v1beta/models/{model}:streamGenerateContent

Pricing

Text tokensPer 1M tokens
InputCached inputOutput
Standard$0.25—$1.5
Priority$0.45—$2.7
Flex$0.125—$0.75

Family Comparison: gemini-3.1

ModelContextMax outPricing
gemini-3.1-flash-live-preview131K66K—
gemini-3.1-flash-tts-preview8K16K—
gemini-3.1-flash-lite-image66K4K$0.25$1.5
gemini-3.1-flash-lite-preview1.0M66K$0.25$1.5
gemini-3.1-flash-lite1.0M66K$0.25$1.5
gemini-3.1-flash-image-preview131K33K$0.5$3
gemini-3.1-flash-image131K33K$0.5$3
gemini-3.1-pro-preview1.0M66K$2$12

API

GET/v1/models/vertex/gemini-3.1-flash-lite