gemini-3.1-pro-preview

Integration & capabilities

Supported protocols

curl -X POST "https://api.openmodel.ai/v1beta/models/gemini-3.1-pro-preview:generateContent?key=$API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [
      {"role": "user", "parts": [{"text": "Hello"}]}
    ]
  }'

Supported capabilities

Function Calling

Function calling (also known as tool calling) provides a powerful and flexible way for models to interface with external systems and access data outside their training data.

Tool Choice

By default the model will determine when and how many tools to use. You can force specific behavior with the tool_choice parameter.

Structured Outputs

Ensures the model will always generate responses that adhere to your supplied JSON Schema.

Streaming

Lets you start printing or processing the beginning of the model's output while it continues generating the full response.

System Messages

You can guide the behavior of the model with system instructions.

Reasoning

Reasoning models use internal reasoning tokens before producing a response.

Prompt Caching

Optimizes API usage by allowing resuming from specific prefixes in your prompts. This significantly reduces processing time and costs for repetitive tasks or prompts with consistent elements.

Vision

Models can process image inputs and analyze them — a capability known as vision.

Audio Input

Analyzes audio input and generates text responses.

Video Input

Processes videos, enabling many frontier developer use cases that would have historically required domain specific models.

PDF Input

Ask the model about any text, pictures, charts, and tables in PDFs you provide.

URL Context

Lets you provide additional context to the model in the form of URLs; the model accesses content from those pages to inform and enhance its response.

Web Search

Allows models to access up-to-date information from the internet and provide answers with sourced citations.

Service Tier

Flex processing provides lower costs in exchange for slower response times; Priority processing delivers significantly lower and more consistent latency.

Context & limits