Vertex AI model
Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview is a Vertex AI model tracked in Sim. It supports a 1.05M token context window. Pricing starts at $2/1M input tokens and $12/1M output tokens. Key capabilities include Temperature 0-2, Tool choice, Structured outputs. Best for reasoning-heavy tasks that need more deliberate model control.
Input price$2/1M
Cached input$0.2/1M
Output price$12/1M
Context window1.05M
Max outputNot published
ProviderVertex AI
UpdatedApr 1, 2026
Best forBest for reasoning-heavy tasks that need more deliberate model control.
Temperature0 to 2
Reasoning effortNot supported
VerbosityNot supported
Thinking levelsminimal, low, medium, high (default: high)
Structured outputsSupported
Tool choiceSupported
Computer useNot supported
Deep researchNot supported
Memory supportSupported
Max output tokensNot published
Frequently asked questions
Gemini 3.1 Pro Preview is a Vertex AI model available in Sim. Gemini 3.1 Pro Preview is a Vertex AI model tracked in Sim. It supports a 1.05M token context window. Pricing starts at $2/1M input tokens and $12/1M output tokens. Key capabilities include Temperature 0-2, Tool choice, Structured outputs.