Question 1

What is the cost of Gemini 3.1 Flash Lite by Vertex?

Accepted Answer

Gemini 3.1 Flash Lite by Vertex 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.

Question 2

What is the context window of Gemini 3.1 Flash Lite by Vertex?

Accepted Answer

Gemini 3.1 Flash Lite by Vertex has a context window of 1.0M tokens. It supports up to 1.0M input tokens and can generate up to 66K output tokens.

Question 3

What are the capabilities of Gemini 3.1 Flash Lite by Vertex?

Accepted Answer

Gemini 3.1 Flash Lite by Vertex supports advanced reasoning, tool calling/function calling, structured output, adjustable temperature, file attachments. It has closed weights.

Question 4

What input and output types does Gemini 3.1 Flash Lite support?

Accepted Answer

Gemini 3.1 Flash Lite by Vertex accepts text, image, video, audio, pdf as input and can generate text as output.

Question 5

Does Gemini 3.1 Flash Lite by Vertex support reasoning?

Accepted Answer

Yes, Gemini 3.1 Flash Lite by Vertex supports advanced reasoning capabilities.

Question 6

Is Gemini 3.1 Flash Lite by Vertex open source?

Accepted Answer

No, Gemini 3.1 Flash Lite by Vertex has closed weights. The model is only available through the Vertex API.

Question 7

Does Gemini 3.1 Flash Lite support function calling?

Accepted Answer

Yes, Gemini 3.1 Flash Lite by Vertex supports tool calling (also known as function calling), allowing it to interact with external tools and APIs during conversations.

Question 8

What is the knowledge cutoff date for Gemini 3.1 Flash Lite?

Accepted Answer

Gemini 3.1 Flash Lite by Vertex has a knowledge cutoff date of 2025-01. This means the model was trained on data available up until that date.

Gemini 3.1 Flash Lite API

Input Modalities

Standard (per 1M tokens)

Caching (per 1M tokens)

Output Modalities