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Gemini 3.1 Flash Lite Preview

gemini-3.1-flash-lite-preview

Gemini 3.1 is Google DeepMind's latest AI model family, built on the Gemini 3 architecture with significant upgrades in intelligence and speed.

Authentication

authorization string required

All APIs require authentication via Bearer Token.

Get API Key:

Visit API Key Management Page to get your API Key.

Usage:

Add to request header:

Authorization: Bearer YOUR_API_KEY

Parameters

model string required

Model ID to use for the request

Value: gemini-3.1-flash-lite-preview

messages array required

Array of message objects representing the conversation history

role string required

Message role

Options: user, assistant, system, developer

content string | array required

Text string or multimodal array

max_tokens integer

Maximum tokens to generate in the completion

Range: 1 - 16384

temperature number

Sampling temperature to use

Default: 1.0

Range: 0.0 - 2.0

top_p number

Nucleus sampling parameter

Default: 1.0

Range: 0.0 - 1.0

stream boolean

Whether to stream response incrementally

Default: false

Response Format

error object

Error information, only present when status is failed

code string

Error code

message string

Detailed error message

output array

Generation results, only present when status is completed

content array

List of generated resource content

type string

Resource type

Value: image｜video

url string

Processed resource URL

jobId string

Remote task ID

usage object

Usage statistics, only present when status is completed

cost string

Total cost in USD

discount number

Discount amount

metadata object

Metadata information