# Gemini 3.1 Flash Lite

> Gemini 3.1 Flash-Lite——Google 成本最低的 GA 模型，適合高並發。

Canonical: https://routemux.com/zh-Hant/google/gemini-3.1-flash-lite
Provider: Google

## Key facts

| Field | Value |
| --- | --- |
| Model ID | google/gemini-3.1-flash-lite |
| Official model ID | gemini-3.1-flash-lite |
| Context window | 1M |
| Max output | 64K |
| Input modalities | text, image, video, file |
| Output modalities | text |
| Capabilities | Vision, Tool Calling, Json Mode, Video Input |
| Availability | available |

## Pricing

- RouteMux input: $0.075 per 1M tokens
- RouteMux output: $0.45 per 1M tokens
- Official input: $0.25 per 1M tokens
- Official output: $1.5 per 1M tokens
- Cache read: $0.0075 per 1M tokens
- Saving vs official: 70%
- Official price source: gemini_x0.3, verified 2026-06-08

Billing is prepaid wallet, charged per successful request only.

## API access

Base URL: https://api.routemux.com

Supported protocols:

- openai_chat
- google_vertex_ai

Aliases that also route here: models/gemini-3.1-flash-lite

## Other variants in this family

- Gemini 3.1 Pro (`google/gemini-3.1-pro-preview`)