Gemini 3.1 Flash Lite

Google's low-latency Gemini model for high-volume multimodal and agent workloads.

MultimodalThinkingToolsFiles1M Context

Context Window

1M tokens

gemini-3.1-flash-lite

Max Output

1M tokens

Input

$0.225$0.25

10% off

1M tokens

Output

$0.675$0.75

10% off

1M tokens

Model Codegemini-3.1-flash-lite

Playground

Model Code

gemini-3.1-flash-lite

Reference inputs

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Output

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Pricing

Plan	Context Window	Max Output	Input	Output	Cache Write	Cache Read
gemini-3.1-flash-lite	1M tokens	-	$0.225$0.2510% off 1M tokens	$0.675$0.7510% off 1M tokens	-	-

Context caching · $0.01125 · 1M tokens

README

Gemini 3.1 Flash Lite is Google's low-latency Flash-class model, designed for high-volume multimodal and agent workloads. It supports thinking (reasoning), tool use, and file handling, with multimodal input (text, image, audio) and text output, served over the Gemini native protocol.

Gemini 3.1 Flash Lite supports thinking (reasoning): requests may spend tokens on reasoning before producing the answer, so max_tokens should be set above the expected answer length.
It supports multimodal input (text, image, audio) with text output, tool use, and file handling over a 1M-token context window.
As a low-latency model, it is aimed at high-volume multimodal and agent workloads where fast turnaround and cost efficiency matter more than frontier depth.

API

Use the API docs for request format, parameters, and integration details.

Google's low-latency Gemini model for high-volume multimodal and agent workloads.

Model Code

gemini-3.1-flash-lite

View API Docs

API

Endpoint

POST /v1beta/models/{model}:generateContent

Authentication

x-goog-api-key: YOUR_REACH_API_KEY
Content-Type: application/json

Example

curl -X POST "https://direct.reachapi.ai/v1beta/models/YOUR_MODEL_ID:generateContent" \
  -H "x-goog-api-key: YOUR_REACH_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {
        "role": "user",
        "parts": [
          {
            "text": "Introduce ReachAPI in one sentence."
          }
        ]
      }
    ],
    "generationConfig": {
      "temperature": 0.2
    }
  }'

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