Gemini 3.1 Flash Lite API
About
Build advanced reasoning agents with Gemini 3.1 Flash Lite, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.25/1M input and $1.50/1M output tokens, native tool calling support. Access Gemini 3.1 Flash Lite via the Google API with up to 66K output tokens.
Capabilities
Input Modalities
textimagevideoaudio
Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
66K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.25
Output
$1.50
Caching (per 1M tokens)
Read
$0.03
Write
$1.00
Frequently Asked Questions
Gemini 3.1 Flash Lite by Google costs $0.25 per 1M input tokens and $1.50 per 1M output tokens. Cached reads cost $0.03 per 1M tokens. Cache writes cost $1.00 per 1M tokens.
Model Details
ID
gemini-3.1-flash-lite
Provider
GoogleFamily
gemini-flash-lite
Release Date
May 7, 2026
Knowledge Cutoff
Jan 1, 2025
API Integration
NPM Package
@ai-sdk/google
Environment Variables
GOOGLE_GENERATIVE_AI_API_KEY
GEMINI_API_KEY