Question 1

What Vertex AI models are available in Sim?

Accepted Answer

Sim currently tracks 10 Vertex AI models including Gemini 3.1 Pro Preview, Gemini 3.1 Flash Lite Preview, Gemini 3 Pro Preview, Gemini 3 Flash Preview, Gemini 2.5 Pro, Gemini 2.5 Flash, and more.

Question 2

What is the default Vertex AI model in Sim?

Accepted Answer

Gemini 2.5 Pro is the default Vertex AI model in Sim.

Question 3

What is the cheapest Vertex AI model tracked in Sim?

Accepted Answer

Gemini 2.0 Flash Lite currently has the lowest listed input price at $0.075/1M tokens.

Question 4

Which Vertex AI model has the largest context window?

Accepted Answer

Gemini 3.1 Pro Preview currently has the largest listed context window at 1.05M tokens.

Question 5

Which Vertex AI models support tool use and function calling in Sim?

Accepted Answer

All Vertex AI models in Sim support tool use and function calling, allowing agents to invoke external APIs, query databases, and run custom actions.

Vertex AI models

Release timeline

Gemini 3.1 Pro Preview

Gemini 3.1 Flash Lite Preview

Gemini 3 Pro Preview

Gemini 3 Flash Preview

Gemini 2.5 Pro

Gemini 2.5 Flash

Gemini 2.5 Flash Lite

Gemini 2.0 Flash

Gemini 2.0 Flash Lite

Deep Research Pro Preview 12 2025

Frequently asked questions