Vertex AI model
Gemini 3.1 Pro Preview
Model ID: vertex/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, Thinking minimal, low, medium, high. 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 window
1.05M
Pricing and limits
Pricing below is generated directly from the provider registry in Sim. All amounts are listed per one million tokens.
Input price
$2/1M
Cached input
$0.2/1M
Output price
$12/1M
Updated
Apr 1, 2026
Context window
1.05M tokens
Max output
Standard defaults
Provider
Vertex AI
Best for
Best for reasoning-heavy tasks that need more deliberate model control.
Capabilities
These capability flags are generated from the provider and model definitions tracked in Sim.
Temperature
0 to 2
Reasoning effort
Not supported
Verbosity
Not supported
Thinking levels
minimal, low, medium, high (default: high)
Structured outputs
Not supported
Tool choice
Supported
Computer use
Not supported
Deep research
Not supported
Memory support
Supported
Max output tokens
Standard defaults
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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, Thinking minimal, low, medium, high.